Case histories of 263 incidents involving runaway reactions of the type A + B→ products, carried out in industrial batch reactors have been analysed on the basis of unit processes involved, initiating factors and type of industry. The case histories were drawn from Health and Safety Executive files, industrial records and the open literature. Although the data has no absolute statistical value,...

In this paper we consider the problem of scheduling N jobs on a single machine, where the jobs are processed in batches and the processing time of each job is a simple linear increasing function depending on job’s waiting time, which is the time between the start of the processing of the batch to which the job belongs and the start of the processing of the job. Each batch starts from the setup ...

To increase cell concentration and the production of alkaline protease, fed-batch cultures with standard medium (1x) or concentrated medium (2x or 5x) as feed were performed. In a fed-batch culture with standard medium as feed, the biomass concentration reached 9.6 g L–1 and the protease activity obtained was 8500 U mL–1 compared to 3000 U mL–1 obtained by growing Teredinobacter turnirae cells ...

The problem addressed is the optimization of the cyclic schedule of a mixed plant in order to maximize its productivity. A mixed plant is composed of batch and continuous tasks. A batch task has a fixed processing time and outputs at the end a fixed amount of product. A continuous task is processed continuously and its decision variable is the processing rate at which this continuous task is pe...

The REVERB challenge provides a common framework for the evaluation of feature extraction techniques in the presence of both reverberation and additive background noise. State-of-the-art speech recognition systems perform well in controlled environments, but their performance degrades in realistic acoustical conditions, especially in real as well as simulated reverberant environments. In this c...

The growth in demand for semiconductors has been accompanied by intense competition between semiconductor manufacturers to satisfy customer on-time delivery needs. This paper is motivated by scheduling the wafer fabrication phase of 300-mm semiconductor manufacturing, as it contains both batch processing operations and multiple customer orders being grouped into production jobs. The resulting m...