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Imagination and Scientific Dilemmas: Exclusion, circularity and infinite regress in "scientific texts"

Building on the results of a mapping project, the paper examines two kinds of knowledge, "expert knowledge" and "scientific knowledge" with regard to "dilemmas of exclusion, circularity and infinite regress" (Paulston, 2000a, p. 9) and the consequences of these dilemmas, when seen with another imagination than that used to construct the knowledge built upon them. The constructive imagination used

Pozzolanic Interaction between Portland Cement and Silica Fume in Concrete.

This article outlines an experimental and numerical study of the long-term interaction between silica fume and Portland cement in concrete subjected to air, water or sealed curing. For this purpose about 2000 kg of eight qualities of concrete were studied at 4 different ages each over a period of 90 months. Half of the concretes contained silica fume. Parallel studies of strength, hydration and in

Separation of Biomass Components by Membrane Filtration - Process Development for Hemicellulose Recovery

Popular Abstract in Swedish De flesta produkter som vi dagligen använder tillverkas genom att utnyttja fossila råvaror som olja, kol och naturgas. Ett stort problem är att dessa råvaror bara finns i begränsade mängder i naturen, vilket medför att de förr eller senare tar slut. Dessutom medför förbränning av fossila råvaror att det bildas miljöskadande gaser (t.ex. koldioxid) som ansamlas i atmosfäOne of the major challenges facing the world today is the reduction of our dependency on fossil resources as their exploitation has severe negative effects on the environment. One way of realizing this is to utilise the components of lignocellulosic biomass to a greater extent as feedstock for various industrial products. However, such utilisation requires the extraction of the biopolymers from th

Time-domain methods for complex media

The objective of this paper is to review the fundamental macroscopic modeling of linear complex materials in a time domain formulation. Based upon a set of basic assumptions, the general form of the constitutive relations for a linear complex media in the time domain is formulated. Furthermore, constraints on the possible form of the susceptibility kernels for a passive medium are presented. For c

Litteraturarbetets möjligheter. En studie av barns läsning i årskurs F-3

This thesis investigates the reading of fiction by young pupils, and classroom work using reading as its starting point. The aim is to gather knowledge about the possibilities and limitations of some of the literary-pedagogical tools that are used in literature-based work in the years pre-school to third grade. The teaching aims to provide the conditions necessary for the pupils to build envisionm