Hay producers working in humid environments are wellacquainted with the consequences of baling moist hays, which include heating, molding, losses of dry matter (DM) and nutritive value, and the possibility of spontaneous combustion. These problems are initiated through respiration by active plant cells and/or microorganisms associated with the hay that consume plant sugars in the presence of ox...

The recent increase in gram-negative bacteria coproducing multiple classes of β-lactamases has made it difficult to accurately identify metallo-β-lactamase (MBL) producers. In the present study, six methods for detecting MBL producers were compared using 56 gram-negative bacterial isolates that produce various β-lactamases. Sodium mercaptoacetic acid (SMA) and EDTA were used as inhibitors for a...

This essay introduces a new featured section, to be published in Small Axe annually, that explores the critical vocabulary of field Caribbean studies.

LACRIMATORS are compounds which, in gaseous form in extremely small concentrations, act as conjunctival irritants. Chemically, almost all are halogenized organic substances. Because of a loose mesomer connexion the halogen atom is very reactive. Duke-Elder (1954) listed more than ten liquid or solid tear producers. Chloracetophenon (Fig. 1) has been that most frequently used for many years, and...