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Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
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Published on: February 19, 2018

尼古丁成市场的未来

Nigel Gray1, Peter Boyle

  • 1Division of Epidemiology and Biostatistics, European Institute of Oncology, 20141, Milan, Italy. nigel.gray@ieo.it

Lancet (London, England)
|September 19, 2003
PubMed
概括

No abstract available in PubMed .

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Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
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