Biomedical subjects

R B Newell

Publications and source records attributed to R B Newell.

3 recordsLinked to original sources

PubMed2001

Using the flexibility index to compare batch and continuous activated sludge processes.

This paper considers the question of which is better: the batch or the continuous activated sludge processes? It is an important question because dissension still exists in the wastewater industry as to the relative merits of each of the processes. A review of perceived differences in the processes from the point of view of two related disciplines, process engineering and biotechnology, is presented together with the results of previous comparative studies. These reviews highlight possible areas where more understanding is required. This is provided in the paper by application of the flexibility index to two case studies. The flexibility index is a useful process design tool that measures the ability of the process to cope with long term changes in operation.

Bioreactors↗

PubMed2001

Operating space diagrams: a tool for designers of wastewater treatment plants.

Recent years have seen the introduction of new and varied designs of activated sludge plants. With increasing needs for higher efficiencies and lower costs, the possibility of a plant that operates more effectively has created the need for tools that can be used to evaluate and compare designs at the design stage. One such tool is the operating space diagram. It is the aim of this paper to present this tool and demonstrate its application and relevance to design using a simple case study. In the case study, use of the operating space diagram suggested changes in design that would improve the flexibility of the process. It also was useful for designing suitable control strategies.

Computer Simulation↗

PubMed1980

A study of familial male breast carcinoma and a second report.

We report on a second instance of familial male breast carcinoma in which the relationship is between father and son. Both patients show a similar histologic type, papillary adenocarcinoma, which is rarely found in male breast cancer. Hormonal and chromosomal studies in the index case (son) did not suggest any predisposing factors and were not available at the time of the father's diagnosis. Other than the familial relationship (and histologic similarity) we could discover no other correlation. This may indicate a coincidental occurrence or hidden factors that are unrecognized or not able to be analyzed at this time.

Adenocarcinoma, Papillary↗