The impact of soil filtered runoff from a section of the M25 outer London motorway (constructed in 1981) on a pond, wetland and stream in a nature reserve was investigated by monitoring water, sediment. The tissues of the emergent plants Typha latifolia and Glyceria maxima collected from the pond were analysed for the heavy metals, Cd, Pb, Cu and Zn. Macroinvertebrates were monitored in the str...

This work addresses the unrelated parallel machine scheduling problem where setup times are sequence-dependent and machine-dependent. The maximum completion time of the schedule, known as makespan, is considered as an objective to minimize. Few studies has been done about this problem, which is a motivation to the development of this work. Other motivations are the fact that it is NP-Hard and i...

This paper deals with the Unrelated Parallel Machine Scheduling Problem with Setup Times (UPMSPST). The objective is to minimize the maximum completion time of the schedule, the so-called makespan. This problem is commonly found in industrial processes like textile manufacturing and it belongs to N P -Hard class. It is proposed an algorithm named AIV based on Iterated Local Search (ILS) and Var...

Macroinvertebrate metrics are helpful tools for the assessment of water quality and overall aquatic ecosystem health. However, their degree sensitivity most reliable bioassessment program development very poorly studied in Togo. This study aimed to test calculated at family genus levels. A total 21 parameters macroinvertebrates' data were collected during three periods 20 sampling sites within ...