BRASS at 25

Hazardous Waste Minimization at a Brass Wire Mill

To eliminate hazardous hexavalent chromium from a brass wire-mill waste, hydrogen peroxide was examined In place of chromic acid for pickling, first in bench-scale tests and then in plant tests. Nthough the elimination of chromic acid requires more rigid control of the ~ wastewater treatment operation and increases the zinc content of the waste-treatment effluent, the economic benefit of substi...

Sympathy or Brass Tacks

as A regional social worker for the Spastics Society I am increasingly aware of the diversity of my clients' needs, their dependence for facilities on specific geographical areas and the way local authorities interpret the statutory provisions. The knowledge that spasticity is irreversible makes an immediate impact. However I try I know I cannot change the status quo and this is the premise on ...

Explorer Hippocampus at 25

Hippocampus at 25.

The journal Hippocampus has passed the milestone of 25 years of publications on the topic of a highly studied brain structure, and its closely associated brain areas. In a recent celebration of this event, a Boston memory group invited 16 speakers to address the question of progress in understanding the hippocampus that has been achieved. Here we present a summary of these talks organized as pr...

HIV-1 at 25

In 1981, the acquired immunodeficiency syndrome (AIDS) appeared insidiously and mystified doctors and scientists alike. No one could have predicted then that it would become, arguably, the worst plague in human history. Today, 33 million persons are living with infection by the human immunodeficiency virus type 1 (HIV-1), the causative agent of AIDS, while another 25 million have already died o...