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Full-Text Articles in Social and Behavioral Sciences
An Assessment Of Five Australian Polychaetes And Bivalves For Use In Whole-Sediment Toxicity Tests: Toxicity And Accumulation Of Copper And Zinc From Water And Sediment, C K. King, M C. Dowse, S L. Simpson, D F. Jolley
An Assessment Of Five Australian Polychaetes And Bivalves For Use In Whole-Sediment Toxicity Tests: Toxicity And Accumulation Of Copper And Zinc From Water And Sediment, C K. King, M C. Dowse, S L. Simpson, D F. Jolley
Faculty of Science - Papers (Archive)
The suitability of two polychaete worms, Australonereis ehlersi and Nephtys australiensis, and three bivalves, Mysella anomala, Tellina deltoidalis, and Soletellina alba, were assessed for their potential use in whole-sediment toxicity tests. All species except A. ehlersi, which could not be tested because of poor survival in water-only tests, survived in salinities ranging from 18‰ to 34‰ during the 96-hour exposure period. No mortality was observed in any of the species exposed to sediment compositions ranging from 100% silt to 100% sand for 10 days, thus demonstrating the high tolerance of the five species to a wide range of sediment types. …
Capturing The Dialectic Between Principles And Cases, Kevin D. Ashley
Capturing The Dialectic Between Principles And Cases, Kevin D. Ashley
Articles
Theorists in ethics and law posit a dialectical relationship between principles and cases; abstract principles both inform and are informed by the decisions of specific cases. Until recently, however, it has not been possible to investigate or confirm this relationship empirically. This work involves a systematic study of a set of ethics cases written by a professional association's board of ethical review. Like judges, the board explains its decisions in opinions. It applies normative standards, namely principles from a code of ethics, and cites past cases. We hypothesized that the board's explanations of its decisions elaborated upon the meaning and …