Abundance, Excess, Waste

Cosmic rays, lithium abundance and excess entropy in galaxy clusters

We consider the production of Li in spallation reactions by cosmic rays in order to explain the observed abundance in halo metal-poor stars. We show that heating of ambient gas by cosmic rays is an inevitable consequence of this process, and estimate the energy input required to reproduce the observed abundance of Li/H∼ 10 to be of order a few hundred eV per particle. We draw attention to the p...

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Rheological characterization of centrifuged thickened waste excess activated sludge (EAS): the maceration effect on sludge pumpability

The purpose of this study is to determine how the rheological characterization of centrifuged thickened waste excess activated sludge (EAS). Wastewater treatment plants (WWTP) contain a number of transport operations of suspensions with special flow characteristics. Flow characteristics, in particular viscosity related effects, vary from very water-like to strongly non-Newtonian. This study use...

Waste and Waste Management

Discard studies have demonstrated that waste is more than just a symptom of an all-too-human demand for meaning, or a merely technical problem for the likes of sanitary engineers and public health officials. The afterlife of waste materials and processes of waste management reveal the centrality of transient and discarded things for questions of materiality and ontology, marginal and polluting ...

Waste and Waste Management

4. With an aim to improve the waste management, Mongolia developed the following regulations: “A rule on classification, collection, temporary storage, transportation, treatment of hazardous wastes” (2002); “Regulation and procedures on disposal and landfill of hazardous waste of business entities, and requirements on waste containers and waste disposal sites” (2006); “Methodology for calculati...