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Extraction of Lignin from Kraft Black Liquor by Membrane Filtration

Lignin from black liquor in the kraft pulping process is a potential raw material for production of renewable chemicals and fuels. However, an efficient extraction method for the lignin from the black liquor is needed. Therefore, two new processes have been designed, which both utilize membrane filtration for the isolation of lignin from the kraft black liquor. The first one includes precipitation

Board Evaluations: making a fit between the purpose and the system

Board evaluations can contribute to effective boards and improved corporate financial performance. The increasing interest in the practice of board evaluations, however, calls for a more systematic and careful approach than has been employed in the past. While most attention has primarily been focused on the content of board evaluations, this article outlines the features of various possible board

Medier, genus och makt

Förutom nyhetsmedier diskuteras reklam och populärkultur ure ett genusperspektiv och utifrån representation. frågor som ställs är bl.a. huruvida reklam och populärkulturens innehåll påverkar unga människors identitetsuppfattning. I boken presenteras aktuell svensk och internationell forskning inom fältet medier och genus.

Aspects of multilinear algebra in statistical analysis of seasonal multivariate time series

Representations of concepts from multivariate statistics are studied using multilinear algebra. Applications are given to the analysis of seasonal multivariate time series. The first paper concerns a class of permutation matrices which are representations of permutation operators on tensor spaces. In the second paper, the derivation of moments and cumulants of Hilbert space valued random variabl

Admission Control Schemes Guaranteeing Customer QoS in Commercial Web Sites

Many commercial web sites, as web stores, have recently experienced performance problems due to the growth of Internet trading. One way to improve a site’s performance during overload is to introduce admission control mechanisms. In this paper we develop and investigate two admission control schemes specifically for distributed commercial web sites. One of the schemes is request-based and the othe

Passive knee muscle moment arms measured in vivo with MRI

OBJECTIVE: To determine moment arm lengths from seven knee muscles and the patellar tendon. The knee muscles were the biceps femoris, semitendinosus, semimembranosus, gracilis, sartorius, and the lateral and medial gastrocnemius muscles. DESIGN: The moment arms were calculated based on MRI measurements. BACKGROUND: Moment arm lengths of different muscles with respect to the joint centre of rotatio