What's the difference between hardened and vulcanization?

Hardened


Definition:

  • (imp. & p. p.) of Harden
  • (a.) Made hard, or compact; made unfeeling or callous; made obstinate or obdurate; confirmed in error or vice.

Example Sentences:

  • (1) Osmotically treated red cells, red cells partially hardened with increasing glutaraldehyde concentrations, and mixtures of normal and hardened red cells were used to test the method.
  • (2) "But if public opposition to further austerity measures hardens, the Greek government could find it even tougher to put the public finances back on a sustainable footing."
  • (3) It's not as if they were once tolerant and have hardened their hearts as they've grown older.
  • (4) Insertion of an adequate approximate amalgam filling and its finish after hardening is one of the basic preventive measures in marginal periodontopathies.
  • (5) Hardened skin was markedly altered physiologically.
  • (6) A comparison was made of the kinetics of the carboxylation reaction of bicarbonate-magnesium-activated ribulose biphosphate carboxylase-oxygenase purified from cold-hardened and unhardened winter rye (Secale cereale L. cv.
  • (7) Rarely has there been a potential presidential candidate so battle-hardened and ready for combat.
  • (8) With its huge corps of jihadists hardened by years of fighting in Kashmir, it is arguably too big to confront at a time when Pakistan is battling the TTP.
  • (9) However, several systematic errors of the method have to be considered, such as the influence of fat present in the spongiosa in varying concentrations as well as beam hardening effects and different calibration methods.
  • (10) It is the sort of malevolent onslaught that has caused many hardened media pundits to quake.
  • (11) Values of elongation were more than 10% even after hardening heat treatment.
  • (12) It’s not an entirely controversy-free choice, considering that Harden hasn’t been a starter for more than two seasons, doesn’t have the best track record as far as being a team player goes and at times has been bad enough on defense that you could make an entire YouTube playlist devoted entirely to clips of him failing to make any defensive effort whatsoever.
  • (13) Compared to conventional CT, the new system should significantly improve contrast resolution of the image and provide better image quantification because of its lack of beam-hardening effects and its efficient implementation of energy-selective imaging methods such as dual-photon absorptiometry and K-edge subtraction with high-atomic-number (high-Z) contrast-enhancement elements.
  • (14) An earlier debt sustainability analysis was leaked in the days leading up to the Greek referendum and helped harden opposition to the (less draconian) terms then on offer.
  • (15) He also signalled a change in policy on welfare, hardening Labour’s opposition to the government’s welfare reforms, by pledging to oppose the cap on the total amount of benefits that a person can receive.
  • (16) The effects of DMSO and cooling on fertilization are likely to be due to zona hardening by cortical granule release and to disorganization of the egg cytoskeleton and plasma membrane.
  • (17) When present during the egg activation process monodansylcadaverine (MDC-a fluorescent lysine analog) inhibits eggshell hardening and at the same time becomes covalently incorporated into the eggshell.
  • (18) In rigor control, crossbridges were most regular in muscles that were stabilized before freezing by prefixation in glutaraldehyde followed by 'hardening' with neutralized tannic acid, so all nucleotide treatments were terminated by such fixation.
  • (19) It main advantage lies in the screening of arterial diseases (very reproductable and sensitive), monitoring of the treatment (unrelated to the operator), study of hardened arteries (diabetes).
  • (20) Evidence from several sources indicate that the catalytic action of the peroxidase is responsible for hardening the FE through the phenolic coupling of tyrosyl residues of the FE proteins.

Vulcanization


Definition:

  • (n.) The act or process of imparting to caoutchouc, gutta-percha, or the like, greater elasticity, durability, or hardness by heating with sulphur under pressure.

Example Sentences:

  • (1) Heat vulcanized Silastic 372 or 373 was used, and seems to be satisfactory.
  • (2) Accelerators, mainly of the thiuram group, antioxidants, vulcanizers, organic pigments, and, presumably, glove powder ingredients are known responsible allergens.
  • (3) Positive patch tests were found most frequently with antioxidants--16.6% (including IPPD--8.6%), followed by vulcanization accelerators--10.6%, and other rubber components--11.4% in all.
  • (4) We need to give them the space and freedom of Africa.” The unprecedented survey, carried out by Allen’s company Vulcan with £7m of funding, is the first continent-wide aerial survey of African elephants using standardised data collection and technical validation methods, involved more than 90 scientists, six NGOs and many volunteers and conservationists on the ground.
  • (5) Indomethacin was vulcanized in dimethylpolysiloxane, an inert silicone suitable for tissue implantation.
  • (6) The Vulcan, flown by the flight lieutenant who led the famous raid on Port Stanley's runway, twice passed over the memorial to commemorate those who fell during the south Atlantic campaign.
  • (7) The results indicate the usefulness of postmortem angiography with contrast medium vulcanizing at room temperature for postmortem diagnosis of rare causes of gastrointestinal haemorrhage.
  • (8) The most probable environment for the assembly of the various forms of protolife would be on mudbanks forming either at the mouth of streams draining regions of active vulcanicity, or round the edge of hot volclanic pools.
  • (9) They called themselves “ the Vulcans ”, not as a tribute to Spock, but to demonstrate they were as tough (or as Bush Sr might say, “iron-ass”) as the Roman god of fire.
  • (10) Primitive condoms were known as early as 1564, but it was not until the discovery of the vulcanization of rubber that the widespread production of condoms and diaphragms was feasible.
  • (11) CLF's laser, called Vulcan, is the most powerful laser in the world: it can focus 500 joules of energy (about the same required to lift 50 apples by 10m) into a laser burst just 40 femtoseconds (40 x 10-15) long - equivalent to one second in a million years.
  • (12) Air samples from the vulcanization process and the pressing of rubber goods showed BaP levels of up to 1.43 micrograms.m-3.
  • (13) The problem resulted from the physicochemical properties of the rubber, not the concentration of zinc used in the vulcanization process.
  • (14) We determined tissue tolerance to in situ vulcanizing silicone histologically in 30 rats by inserting prevulcanized and in situ vulcanized material in paired subcutaneous pockets.
  • (15) It was a lovely, short service and that Vulcan coming over was a wonderful ending."
  • (16) A histopathologic study was done on the larynx of a patient who had been injected 12 years before in the right vocal fold with room temperature vulcanizing silicone.
  • (17) During about 3 years of follow-up in 4 manufacturers contact allergic eczema was noted and polyvalent hypersensitivity to antioxidants and vulcanization accelerators without clinical manifestations of this hypersensitivity was diagnosed in 3 other subjects.
  • (18) A proved carcinogen, benzo[a]pyrene (BP), was incorporated into liquid silicone rubber polymer which was then vulcanized into solid form.
  • (19) Keen on photographing vintage aircraft, he was at Shoreham to capture one of the last flights of the Vulcan bomber.
  • (20) All the studied professional groups (assemblers, millers, vulcanizers) experienced a rise in osteomuscular morbidity and only vulcanizers had higher rates of respiratory, skin and subcutaneous diseases.

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