What's the difference between combustion and knock?

Combustion


Definition:

  • (n.) The state of burning.
  • (n.) The combination of a combustible with a supporter of combustion, producing heat, and sometimes both light and heat.
  • (n.) Violent agitation; confusion; tumult.

Example Sentences:

  • (1) Solely infectious waste become removed hospital-intern and -extern on conditions of hygienic prevention, namely through secure packing during the transport, combustion or desinfection.
  • (2) Glucose, osmotic pressure, packed cell volume, PFC by combustion and volatilization were also measured in blood samples.
  • (3) N-heterocyclic aromatics are environmentally important carcinogenic pollutants produced by incomplete combustion of organic material.
  • (4) A removable, stainless-steel tube is present around the heated area, and this particular configuration makes it possible to begin every combustion procedure from room temperature, and consequently, to achieve a complete evacuation of air from the line even for heat-labile samples.
  • (5) Combustion-product toxicity of perfluorinated polymers in small-scale tests varied markedly under various exposure conditions.
  • (6) Although few relationships among combustion parameters and emissions were uncovered, patterns of emissions were evident, suggesting commonality and relationships among the waste stream constituents and emissions.
  • (7) Biological studies have demonstrated that concentrated extract of tars from combustion of shale oil are carcingenic to the skin of mice.
  • (8) Some compounds derived from tobacco combustion can be induce a response of secretory immune system, because antigen penetration is by respiratory tract epithelium, with IgA antibodies synthesis and immune complex (IC) generation.
  • (9) Waste products from coal combustion have the highest potential risk among the fossil fuel alternatives.
  • (10) Bicyclic phosphorus esters (BCP) originating from the combustion of fire-retardant polyurethane foam containing phosphorus are highly toxic compounds and potent antagonists of GABA-ergic receptors.
  • (11) Firefighters are routinely exposed to a wide variety of combustion products.
  • (12) Combustion gas drying had no effect for the larger PAHs such as benzo(a)pyrene but caused mean increases of between 41% and 126% for fluoranthene, pyrene and chrysene.
  • (13) A wet combustion method for the carbon determination was developed.
  • (14) The design-specified operating temperature was 800 degrees C in the primary combustion chamber and 1000 degrees C in the secondary chamber.
  • (15) Fullerenes C60 and C70, generated by combustion, have been shown previously to be produced in controlled laminar flames accompanied by other compounds having fullerene-like characteristics.
  • (16) There is growing concern over the detrimental health effects to firefighters produced by exposure to combustion byproducts of burning materials.
  • (17) Residential wood combustion accounted for 75% of the exposure to particle associated organics, but only 20% of the estimated cancer risk.
  • (18) Evidence for the atmospheric formation of nitro-PAH has come only recently, from observations that 2-nitropyrene (2-NP) and 2-nitrofluoranthene (2-NF) neither of which has been reported to be emitted from combustion sources, are among the major nitro-PAH present in ambient air.
  • (19) The combustion gases of cotton, polypropylene, acrylic, flame retardant (F.R.)
  • (20) Products of incomplete combustion are identified as a major source of carcinogenic risk in urban areas, especially those from small non-industrial sources.

Knock


Definition:

  • (v. i.) To drive or be driven against something; to strike against something; to clash; as, one heavy body knocks against another.
  • (v. i.) To strike or beat with something hard or heavy; to rap; as, to knock with a club; to knock on the door.
  • (v. t.) To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table.
  • (v. t.) To strike for admittance; to rap upon, as a door.
  • (n.) A blow; a stroke with something hard or heavy; a jar.
  • (n.) A stroke, as on a door for admittance; a rap.

Example Sentences:

  • (1) Having been knocked out of the League Cup and Cup Winners' Cup before Christmas, they lost an FA Cup fourth-round replay at West Brom on 1 February.
  • (2) It pulled to a halt and a bodyguard got out and knocked me unconscious.
  • (3) More seriously, but no less predictably, the inflaming of sectarianism will have knock-on effects in Syria and Iraq.
  • (4) I knocked for quite some time but there was nobody there.” A neighbour said the family had not been home for “a while”.
  • (5) One day, out of the blue, there's a knock on the door.
  • (6) At 7.40am Lord Feldman, the Conservative party chairman, knocked on the front door of No 10.
  • (7) Indeed, with the pageantry already knocked off the top of the news by reports from Old Trafford, the very idea of a cohesive coalition programme about anything other than cuts looks that bit harder to sustain.
  • (8) Davenport, possibly in a fit of pique at having been knocked out, said playing Mauresmo was like 'playing a guy'.
  • (9) This part will be knocked down next year; they have already started opposite."
  • (10) I see myself in exactly the same situation as I saw myself yesterday, though obviously with the bitter disappointment of the failure of being knocked out.
  • (11) "There's nothing better than when the Grammys can rock out, and to have these artists all together on one stage, doing a number that, when they presented it to us, knocked us out, is going to turn out to be one of those Grammy moments that people talk about for a long time.
  • (12) Hester also pledged that customers from other banks will be repaid for 'knock-on' costs after they were left out of pocket by an IT failure that sent 20m transactions awry.
  • (13) Whether it's voting on the day, knocking on doors, making phone calls or speaking to friends and family, the silent majority should feel confident in speaking up.
  • (14) Cooled by a floor fan, nurses, doctors and support staff in blue scrubs move through the small anteroom next to the isolation ward to juggle the needs of the desperately ill patients inside as a stream of people knock on the canvas door asking for updates on their loved ones.
  • (15) We’ve sent out all the boards and there’s still loads of people flooding in, we don’t know what to do.’ It happened in Leeds North West, too – they started the day, they had so many activists that they went: ‘Right, let’s scrap our whole strategy, we’re going to just print off the electoral register instead’ – and rather than focusing on likely Labour voters, which is what you would normally do, they knocked on all the doors on the electoral register – that’s unheard of.” The seat saw a 14% swing to Labour, overturning a Lib Dem majority of almost 3,000 and replacing it with a 4,000 Labour lead.
  • (16) Offers worth £20m and £26m have been flatly rejected by Everton since mid-July, with a third of around £30m also knocked back last week.
  • (17) A protester is knocked back by a police water cannon as riot police advance towards Gezi Park.
  • (18) Chelsea , however, will not be too concerned if this match is added to the long list of games that is used to knock José Mourinho's ploys of conservatism and, ultimately, it is proven to be a valuable result.
  • (19) You are hunting for signs of the assembly of injuries - a broken nose, knocked-out teeth, fractured eye socket - incurred by falling face-first down a fire escape in Michigan while high on crystal meth, crack cocaine and cheap wine.
  • (20) On election day, we’ll have 6,000 campaign volunteers knocking on doors.