Abstract: We have built and exercised a simple, veridical, macroeconomic model which displays growth and cycles as well as the influence of monetary and fiscal policy. Features of the model comprise a ...

Abstract: An optimal prepolymerized inorganic coagulant, poly-alumino–iron sulphate (PAFS), was developed and examined for drinking water treatment. PAFS is a new type of prehydrolyzed metal–ion coagulant. An investigation of the ...

Abstract: Field trials and analytical modeling are conducted in order to evaluate methods for thawing frozen ground. Propane heaters, electric heaters, and coal and straw fires are built over specially constructed test pads. Surface ...

Abstract: A model to predict the spatial and temporal variation of domestic dry weather flow in sewer networks was developed in this paper. A probabilistic framework was used to interpret intermittent appliance usage and methods for ...

Abstract: A large number of deep‐bed filtration models have been proposed since the contributions of Iwasaki (1937). The reason behind the development of several deep‐bed filtration models has been the continuing necessity for a ...

Abstract: An equation of motion for a drill string, considering elastic, dynamic, and drag forces, is derived. This equation is then applied to two types of drill-string behavior; i.e., a beam having ...

Abstract: Slow sand filtration (SSF) is widely used throughout the world for the treatment of drinking water. However, relatively little attention has been given to the development of a comprehensive process model. Previous studies ...

Abstract: This paper describes the use of a deterministic slow sand filter process model to investigate and assess some of the fundamental aspects and mechanisms operating during slow sand filtration (SSF). These include the role ...