Utilizing non-metabolizable substrates as valuable tools to differentiate between transport and subsequent metabolism, the possibility was explored whether there was a relationship between the sodium requirement by marine bacterial cella for growth and a sodium requirement for uptake of substrates.…

Knowledge of the relationships between nitrogen fertilization and nitrogen availability is needed to guide plans for providing optimum tree growth by silvicultural operations. PART 1. Detailed studies of the mineralization of urea were made by laboratory incubation of black spruce…