Methods presently used for the determi­ nation of serum iron and unsaturated ironbinding capacity have somewhat limited spectrophotometric sensitivity. Since molar absorptivity of a metal-ligand complex is a relative measure of sensitivity, an increase in the former improves accuracy in the de­ termination of trace constituents, especially when they are abnormally low. Obviously, low amounts of...

homogeneous yield-limiting factors, for which a single rate of a specific crop input is appropriate (Doerge, 1999). The spatial variation of productivity across farm fields can be classiVarious techniques of delineating management zones fied by delineating site-specific management zones. Since productivity are currently being investigated in different parts of the is influenced by soil characte...

numerical instability can be problems. Therefore, the nonlinear least-squares regression method introduced Tension infiltrometer measurements have been used to measure by Logsdon and Jaynes (1993) has been widely used, steady-state infiltration rates at applied tensions. The measurements owing to its simplicity. They estimated saturated hycan be used to determined soil hydraulic properties thro...

other compounds found in healthy cell walls (Cochrane et al., 2000), as well as from a number of compounds Carotenoids, compounds valuable for their antioxidant properties that increase in concentration during host–pathogen inin humans and animals, are sometimes present in the bran layers of teractions (Pierce and Essenberg, 1987; Belefant-Miller rice (Oryza sativa L.). We developed a nondestru...

Ammonia, the second largest synthetic chemical commercialized worldwide, is widely used as a fertilizer and key intermediate for production of all nitrogen-atom-containing chemicals. It could also be employed fueling applications. Electrochemical N2 reduction reaction (NRR) offers renewable distributed route NH3 production. Heightened research efforts have focused on design development advanced...