Published in Tribology Letters
In some industrial situations, components are subject to repetitive impact in the presence of a slurry. A novel repetitive impact-with-slurry test rig was developed to evaluate the behaviour of a wide range of engineering materials in such conditions. The test materials could be categorised into five main groups – heat treated steels, stainless ste...
PCC Structurals aims to improve the quality and consistency of their ceramic mold production for their investment casting processes to decrease product loss figures. Although their current production processes result in acceptable quantities of high-quality molds, a significant percentage of defective molds are produced. These defective molds cause...
Den här rapporten presenterar ett examensarbete som har utförts på Boliden Mineral AB. Arbetet handlar om att förbättra pumphoarnas konstruktion för att minimera slitage och sedimentering av slurryn. Pumphoarna sitter i anslutning till slurrypumparna i anrikningsverket för att reglera flödet av slurry. Arbetet följer Boliden Mineral ABs egna projek...
Outotec Sweden AB works in the field of precious metal refining. Silver electrorefining is one of Outotec’s technologies widely applied in numerous silver refining plants worldwide. During this project a specific section in a silver refinery plant has been investigated. Today’s system provided by Outotec utilises gravity as a means of transport of ...
During the advance of a tunnel boring machine (TBM), the torque applied to rotate the cutterhead must overcome the resisting moments acting on it. Hence, one of the major concerns of TBM design is to determine the torque and power requirements of the excavation machine. The first empirical approach for torque estimation was developed in the 80’s by...
When used as secondary refrigerants for cold storage and refrigeration applications, hydrate slurries offer high-energy densities due to their significant latent heat of fusion. In this context, gas hydrates exhibit a feature not yet explored in the literature: vapor is released when hydrate crystals melt in the heat exchanger supplying cold to end...
Published in PeerJ
Field trials were conducted in July-August and October 2012 to quantify the inactivation rate of Escherichia coli O157:H7 when mixed with fecal slurry and applied to romaine lettuce leaves. Lettuce was grown under commercial conditions in Salinas Valley, California. One-half milliliter of rabbit, chicken, or pig fecal slurry, containing an average ...
Published in Environmental pollution (Barking, Essex : 1987)
Organic fertilizers, such as digestates and manure, are increasingly applied in agricultural systems because of the benefits they provide in terms of plant nutrients and soil quality. However, there are few investigations of N2O emissions following digestate application to agricultural soils using process-based models. In this study, we modified th...
Published in Journal of Material Cycles and Waste Management
In this study, household-scale anaerobic digestion (AD) in Sri Lanka was surveyed by visiting 100 AD users. The process flow, material flow, management of biogas and bioslurry, changes in waste disposal, and cost of construction were analyzed in terms of encountered problems. The main motivations to use AD are energy recovery by biogas and proper o...
Published in CardioVascular and Interventional Radiology
PurposeTo evaluate the relationship between gelatin sponge preparation methods and the incidence of intrauterine synechia following uterine artery embolization (UAE) for postpartum hemorrhage (PPH).Materials and MethodsIn a retrospective monocentric study, we used data from 20 consecutive UAE procedures (19 patients) for PPH, performed in 2007–2016...
