Nitrogen flux distribution

Distributions of Major Nitrogen Pools and Selected Nitrogen Fluxes... 

Distribution of Nitrogen Fluxes in Rivers by Continent and Ocean Basin i577... 

Case studies in molecular level resource-ratio analysis decomposed in silico stoichiometric models of E. coli into EFMs (Carlson and Srienc 2004b Carlson 2007, 2009). As mentioned previously, EFMs are minimal biochemical pathways comprised of metabolite transport and chemical reactions the enzyme-based steps require an investment of anabolic resources like nitrogen or iron. EFMs, in this context, represent theoretical proteomes for which investment requirements can be tabulated. Calculation of investment requirements necessitates an assumed relationship between fluxes and enzyme concentrations. This relationship varies depending on specific enzyme properties, as well as the chemical environment. Two scenarios are proposed as bounds on the pathway-level flux-to-enzyme concentration relationships. The first approach is a minimalist relationship between pathway enzymes the concentration ratio of every enzyme pair is set to one. This scenario would utilize varying metabolite pool size and activity modulation including allosteric regulation to achieve a specified flux distribution (this flux-to-enzyme model... 

Acridine char nitrogen, retention as function of burnoff, 307/, 308/ Advection fluxes, calculation, 41-43 Aerosol particle size distribution, molecular clusters, 317 Aerosol scavenging pathway, acetic and formic acid formation, 223 Aerosol species, transformation over the western Atlantic, 52 Aerosol sulfate airborne determination, 298 See also Sulfate... 

Sedimentation of PSC particles can be an effective process for removing water and nitrogen compounds from the atmosphere (dehydration and denitrification), and has to be taken into account when modeling PSC effects. The velocity at which particles sediment increases with the size of these particles. If the size distribution of the particles follows a lognormal law, the sedimentation flux for a given chemical compound can be expressed as (Considine et ai, 2000)... 

---