Filtyp
Some metal ions, such as copper and zinc, are essential nutrients and catalysts in biochemical reactions. Other metal ions, e.g. cadmium and mercury, are highly toxic elements. Heavy metals detection has proven difficult with classical as well as experimental analytical methods. Novel techniques are required for the measurement of bioavailable toxic elements and for detecting small ligands binding
This paper discusses spatial interventions as an important part of women’s struggles to improve their living conditions in poor urban areas. A case-study from San José, Costa Rica is the basis for the discussion. Women’s interventions are analyzed in three public places— a park, a playground and a community centre— through the concept of appropriation. The study shows that women’s interventions ha
The paper opens by generalizing the concept of 'informing science'. It then introduces some meta-scientific perspectives and a discussion of a metaphor that has considerable explanatory power. Two main schools of metascience are presented and contrasted. The difference between treating invariances in natural sciences and in social and cultural sciences is discussed. The double helix is introduced
This paper attempts to address the failings of a predominant paradigm in IS research and practice that emphasises technological determinism. This paradigm makes use of a false belief in the power of rationality in organizational decision-making, and a mythology in which organizational actors can be viewed as passive ‘users’ of technology. We wish to create a discussion of the nature and role of pr
The operating range in HCCI mode is limited by the excessive pressure rise rate and therefore high combustion induced noise. The HCCI range can be extended with turbocharging which enables increased dilution of the charge and thus a reduction of combustion noise. When the engine is turbocharged the intake charge will have a high temperature at increased boost pressure and can then be regulated in
