XLV.—On colour changes observed in some cobalt salts

Epidemiological survey of workers exposed to cobalt oxides, cobalt salts, and cobalt metal.

Several organs (lung, skin, thyroid, heart, bone marrow) are potential targets of cobalt (Co). Whereas there is no doubt that inhalation of Co alone may cause bronchial asthma, its role in the occurrence of hard metal disease is still controversial because most cases were reported in workers exposed not only to Co but also to other substances such as tungsten carbide, titanium carbide, iron, si...

Some Ideas About Colour

Observed Changes in Software Architecture

Assignment text: SEVO (Software EVOlution) is a project, started early 2004, that studies software evolution, especially the evolution of component-based systems and their architecture. More information on the SEVO homepage The assignment intends to make a literature study over the subject, and to perform an empirical study on a software system. The focus is on identifying the most important fa...

Some evidence for colour-blindness in Octopus.

Manganese and Cobalt Salts of Para-Amino-Benzoic Acid Supported on Silica Gel as Oxidizing Catalysts

Para-Aminobenzoic acid is supported on silica gel via reaction of activated silica gel and p-aminobenzoic acid which is then converted to its manganese and cobalt salts. A mixture of the manganese and cobalt salts of the acid is used to catalyze allylic and benzylic alcohols to their corresponding carbonyl compounds in reasonable yields using oxygen or air. Reactions are clean and the catal...