G. F. Farquhar

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Farquhar and Gan have proposed a model for the spatial variation in the isotopic enrichment of H(2)(18)O across a leaf, which is specifically formulated for monocotyledoneous leaves. The model is based on the interaction between mass fluxes longitudinally within the xylem, and fluxes laterally through veinlets into the lamina mesophyll, where moisture(More)
The ability of the white-rot fungus Phanerochaete chrysosporium (INA-12) to degrade various polynuclear aromatic hydrocarbons (PAH) was investigated. Under static, non-nitrogen-limiting conditions, P. chrysosporium mineralized both phenanthrene and benzo[a]pyrene. Total mineralization, based on radioactive tracing, was limited to 1.8%-3% for phenanthrene(More)
The potential commercial application of Phanerochaete chrysosporium requires methods for quantitatively predicting growth and substrate utilization. The growth kinetics of P. chrysosporium INA-12 (CNCM I-398) were investigated and modelled under nonlimiting nitrogen and carbon conditions in submerged static culture. This strain, unlike other strains, does(More)
Fibronectin (FN) has been localized in the rat glomerulus using indirect immuno-labeling. It was demonstrated in frozen sections by immunofluorescence, in sections of fixed kidneys by both peroxidase and ferritin-labeled antibodies, and in isolated glomerular basement membranes (GBM) with ferritin-labeled antibodies. Complementary and convergent results(More)
Value-based reinforcement learning typically involves the repeated application of an update rule, such as the Bellman operator TB, to an action-value function. Recent work has explored the use of alternative operators, which remain optimality-preserving and may result in improved performance. In this report, I study in particular the advantage learning(More)
Although the structure of renal glomerular capillaries is now well established, little is known about the mechanisms involved in the transfer of substances across their wall from the capillary lumina to the urinary spaces. According to prevailing concepts in renal physiology, the formation of glomerular fluid takes place by passive ultrafiltration of blood(More)
The potential of control analysis to aid our understanding of regulation and control of photosynthetic carbon metabolism is investigated. Methods of metabolic control analysis are used to determine flux control coefficients of photosynthetic reactions from enzyme elasticities. Equations expressing control coefficients symbolically by enzyme elasticities are(More)
This paper describes an integral system to model nonpoint source pollution in surface waters. Diffuse pollution models were included in a Spatial Decision Support System (SDSS) with a unique platform, common interfaces and Geographic Information System (GIS) capabilities. This consists of pre-and post-processing tools, model control and sensitivity analysis(More)
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