Resistivity oxygen content effect

The quality of the tungsten film is poor in terms of purity. The carbon and oxygen content are very high, typically about 20 at.% each. This can lead to a high resistivity 50-500 /iHcm. Also, the combination of H2 and W(CO)6 has been reported [Vogt171] but the presence of hydrogen had no positive effect on film properties. 

Biocidal properties of cyanide in aquatic environments are modified by water pH, temperature, and oxygen content life stage, condition, and species assayed previous exposure to cyanides presence of other chemicals and initial dose tested. There is general agreement that cyanide is more toxic to freshwater fishes under conditions of low dissolved oxygen that pH levels within the range 6.8-8.3 have little effect on cyanide toxicity but enhance toxicity at more acidic pH that juveniles and adults are the most sensitive life stages and embryos and sac fry the most resistant and that substantial interspecies variability exists in sensitivity to free cyanide. Initial dose and water temperature both modify the biocidal properties of HCN to freshwater teleosts. At low lethal... 

It has been claimed that the lethal rate is enhanced when carbonated instead of noncarbonated beer is used. The most resistant of the normal brewery contaminants are members of the lactic acid bacteria and certain species of Saccharomyces, e.g. S. pastorianus. Special difficulties attend the pasteurization of returned beer where the level of contaminants may be very high. However since such beer may be filtered before pasteurization and is usually blended into conditioning tank at low rates, the adverse effect on flavour of using a large number of pasteurization units may be discounted. With normal beers, excessive pasteurization leads to cooked, biscuity flavours, especially when the dissolved oxygen content of the beer is high (say in excess of 0-3 mg/1). 

Figure 16.11 Effect of lattice oxygen content on the thermal resistivity of Si3N4 fabricated by gas-pressure sintering (filled circles) and hot-pressing (HP squares). The thermal...

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