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Volume 13
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Volume
Route time estimation of solid waste collection vehicles based on population density
General
In this study, a model for stationary container system is presented to estimate collection time based on population density per 100 m road distance (LPD100). The model also estimates travel and collection times, and time spent on waiting at stop signs and traffic lights separately for stationary...
Monitoring of the particles above the unpaved road by lidar technique
General
Basic concepts of laser-based technique LIDAR (LIght Detection and Ranging) are discussed in this article as well as advantages and disadvantages. Presented are measurements of relative particulate concentrations above an unpaved road which were performed in a rural area near the Iowa City, Iowa...
Concentrations of selected toxic elements in airborne particulates of Patras, Greece
General
The Mn and Pb of the total suspended particulates (TSP) in totally 95 1-h samples and As, Cd, Mn, Ni and Pb in totally 29 24-h samples have been determined by flameless graphite furnace atomic absorption spectrophotometry. The monthly TSP for July 1992 contained Mn and Pb 0.033 and 1.25‰ in downtown...
Decision making in water resources with fuzzy information
General
The multiple objectives optimization in water resources planning consists in trading multiple and conflicting objectives, forming a complex and dynamic process. In the last four decades multiobjective decisions based on fuzzy sets have been evolved and considerable research spawned into the...
Removal of a basic dye from aqueous solution by adsorption using rice hulls
General
The removal of dyes from colored effluents, particularly from textile industries, is one of the major environmental concerns these days. Current methods for removing dyes from wastewaters are costly and cannot effectively be used to treat wide range of such wastewaters. This work describes the use...
Municipal solid waste management and landfill site selection in Greece: irrationality versus efficiency
General
Municipal solid waste (MSW) collection and disposal is a major problem of urban environment in the world today. MSW management solutions have to be technologically feasible, legally and socially acceptable and environmentally and financially sustainable. European policy is pushing to a rational...
Organizing a public aquarium: objectives, design, operation and missions. A review
General
Many Public Aquaria have been designed and constructed all over the world during the last three decades. The serial arrangement of relatively small, rectangular, concrete tanks has been replaced by fewer large, irregularly shaped tanks, replicating habitats. The “taxonomic concept” of displaying...
Statistical analysis of trihalomethanes in treated-water tanks: seasonality, local variability and correlations
General
Chlorine was accepted as an effective disinfectant for drinking water in early 1900s. Because of chlorination, chlorine has dramatically reduced the incidence of waterborne diseases. An unwanted side effect is the formation of harmful by-products upon chlorination. The most significant group of...
Feasibility study of cement composites with para wood particle wastes: strength and durability
General
The purpose of this study was to investigate the potential use of Para wood particle wastes and cement for producing the cement composite as a new environmental friendly construction material. Strength and durability of cement composites mixed with different mix proportions of Para wood particles...
3-D Oil spill modelling. Natural dispersion and the spreading of oil-water emulsions in the water column
General
A 3-D hybrid turbulence model, simulating the transport and fate of oil spills in various waters, is used to evaluate the influence of natural dispersion on the spreading of water-in-oil emulsions formed in the water column. The model combines the Navier-Stokes equations for two-phase flows, the RNG...