The ratios of bicarbonate uptake to substrate oxidation were measured for three genera of nitrifying bacteria. The ratios for the two ammonium oxidizers tested were essentially the same; 0.0863 +/- 0.0055 and 0.0868 +/- 0.0091 mumol of bicarbonate were taken up per umol ammonium oxidized for Nitrosomonas europaea and a Nitrosospira strain, respectively. For Nitrobacter sp., a ratio of 0.0236 +/...

Metagenomics analysis has been applied to identify the dominant anaerobic microbial consortium of the carbon monoxide (CO) oxidizers in anaerobic sludge. Reads from the hypervariable V6 region in the bacterial 16s rDNA were aligned and finally clustered into operational taxonomic units (OTUs). The OTUs from different stages in anaerobic CO condition were classified. Alphaproteobacteria, clostri...

CoNiZnFe 2 O 4 contains four transition metals known to act as a carrier during the thermal decomposition of solid propellant oxidizers. The studies disclosed that addition catalyst makes process AP faster.

Soil pH is a major determinant of microbial ecosystem processes and potentially a major driver of evolution, adaptation, and diversity of ammonia oxidizers, which control soil nitrification. Archaea are major components of soil microbial communities and contribute significantly to ammonia oxidation in some soils. To determine whether pH drives evolutionary adaptation and community structure of ...

Introduction Conclusions References

Hybrid rockets are attractive as post-boost stages and kick motors due to their inherent safety low cost, but it is not clear from previous research which oxidizer most suitable for maximizing ?V within a fixed envelope size, or what impact O/F shift nozzle erosion will have on ?V. A standard hybrid rocket design proposed used clarify the of component masses three 1 m3 envelopes varying height-...

• Biological biogas upgrading process was evaluated in up-flow reactors. Different types of gas distributers were investigated for upgrading. Biogas with more than 98% CH 4 produced ex-situ process. H 2 gas–liquid mass transfer rate can be improved using porous SiC distributor. Four different ceramic distributors (Al O 3 1.2 μm and 0.5, 7 14 μm) to increase biomethane formation during Each type...