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The last step of aerobic respiration, the reduction of dioxygen to water, is catalysed by terminal oxidases. These oxidases can be divided into two unrelated families, the heme-copper oxidases and the cytochrome bd-type oxidases. These enzymes contain two or more heme molecules as prosthetic groups. Heme is an iron-containing ring-closed tetrapyrrole. All eukaryotic and most bacterial oxidases bel
A low frequency algorithm designated for the calculation of the magnetic and the electric energies and the ohmic losses of passive components has been developed. These quantities can be used to achieve the inductance, the capacitance, the resistance, and the Q-value of the inductor at low frequencies. The method is based on an iterative scheme in which the different fields, such as the electric po
Abstract in UndeterminedAfrican agriculture is more dynamic than one would expect, given the chronic food crisis in the sub-continent. Due to macro-economic and political preconditions, however, farmers’ dynamism is channelled into other directions than would be required to attain self-sufficiency in food grains. This is the main conclusion of this study of farm dynamics in eight African countries
