In the collections of the Vasa Museum, 100 leather objects have exhibited salt precipitations. The objects, that have previously been impregnated with PEG, have become deteriorated and fragmented due to the precipitations. During a previously conducted study it was established that the precipitations consisted of iron and sulphur. However, it was not established whether they occurred in the leather?s inner structure and no treatment plan was developed.

Latent heat storage is a way to store thermal energy when a phase change material undergoes a phase change. The advantage of latent heat storage is the capability to store more energy per mass unit than other heat storage methods. The most commonly used phase change in latent heat storage is the transition between solid and liquid. Phase change materials can be divided into organics, inorganics and eutectics.In the Nordic electricity market the price of electricity is set every hour by Nordpool spot, which leads to price fluctuations because of changes in demand. The main goal of this report is to create a latent heat storage system in a single-family home and investigate the possibility to save money by charging the latent heat storage system when the price of electricity is low, and discharge when the price is high.The thermodynamic model consisted of a ?tube-in-tube? heat exchanger with phase change material in the outer tube and water as the heat transfer fluid in the inner tube.

Composting is a process in which organic matter is mineralized by microorganisms. In January 2005 landfilling of organic waste was prohibited in Sweden. With this prohibition composting has become an important alternative to handle the produced organic wastes. One problem with continuous small-scale composting is the production of organic acids that will inhibit a further composting process. The aim of these theses was to study what effects temperature and dry matter content had on the production of organics acids, and what effect the organic acids had on the mineralisation of the substrate as well as the stability during storage of the product.

Att den rika västvärlden måste behärska sin konsumtion är ett synsätt som har fått stort genomslag. Miljöproblemen växer och arbetare utnyttjas runt om i världen. När frågor om hållbarhet uppmärksammas alltmer, får även etisk konsumtion ökad uppmärksamhet. Samtidigt som efterfrågan av etiska produkter ökar och företags ansvarstagande aktiviteter ökar har en viss problematik med kommunikation mellan företag och konsumenter uppmärksammats. Samtidigt som konsumenter efterfrågar mer information att grunda sina etiska val på så dömer de lätt ut företags etiska agerande som skenheligt.Ett nytt sätt att informera om ansvarstagande aktiviteter ser vi hos Dole Organic.