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The organic/inorganic interface: a study of direct electron transfer

Porphyrins have become an interesting class of molecules in studies of molecular electronics. They are, however, sensitive to handling procedures and may give different results in electronic or optical properties depending on the method used for coupling or adsorption. We present electronic measurements of a heme porphyrin mounted in a biomolecular structure-an enzyme-and show that a direct electr

Design of low order approximately linear phase IIR filters

In this paper, a new method for the design of approximately linear phase IIR filters is proposed. This method is based on first designing an asymmetrical FIR filter which is approximately linear phase and then deriving a low order approximately linear phase IIR filter by model reduction techniques.

Anaerobic Digestion of Solid Residues on the Bolivian Altiplano

Anaerobic digestion and the production of biogas can provide an efficient means of meeting energy needs locally and reducing organic loading due to untreated waste material in water recipients. Furthermore, residues after anaerobic digestion may be used as a fertilizer to improve the soil in many parts of the world. Most natural organic waste can be used in anaerobic digestion. In developing count

Olympiaskolan och humanistisk bildning som livsstilsprojekt

I tre fallrapporter från forskningsprojektet Framgångsrikt skolledarskap i olika skolkulturer presenteras resultat från omfattande empiriska undersökningar vid tre skolor. I rapporterna beskrivs och problematiseras skolornas respektive kultur: den aktuella gymnasieskolans kunskapskultur, där bildning kommit att bli ett kännetecken; den utvalda f-9-skolans karriärkultur, utsatt för ett kraftfullt f

Modelling of Euroclass Test Results by Means of the Cone Calorimeter

An important part of introduction of the construction productive directive (CPD) is the introduction of the so-called Euroclasses for building products. The Euroclasses define the different fire classes within the European harmonised system. The major fire test method in this system for wall and ceiling linings, the so-called SBI test (EN 13823), is, however, an intermediate fire test and requires

High isolation compact four-port MIMO antenna systems with built-in filters as isolation structure

In this work, we present a built-in filter method to enhance the isolation level between closely packed MIMO antennas. The built-in filter is composed of several slits etched on the ground of the antenna structure. The number and length of slits depend on both the resonance frequency and the structure of the MIMO antenna system. To illustrate its usefulness, two designs of compact planar four-port