The solid phase and fluid phase temperature and species distribution have been calculated numerically in this study. The model considered here consists of catalyst layer, porous-transport layer and the current collector region (rib). Two energy equations approach has been employed in the porous transport layer and one energy equation is solved for the catalyst layer to simulate the temperature dis

It is not often that one is instantaneously able to apply the results of basic research. This work is an example of such an exception. A widely held conviction has been that human peripheral vision could not be improved through optical correction. It w

”Vad ska vi äta ikväll?” är en välbekant fråga för många. Mitt avhandlingsarbete tar sin utgångspunkt i hur småbarnsfamiljer (vår definition inkluderar familjer med barn upp till 8 år) förhåller sig till och får ihop vardagen när det kommer till mat, måltider och inköp. Att varje dag hinna med att tillaga en ordentlig måltid som ska smaka familjens alla medlemmar innebär inte enbart att utföra arb

The research report details the current outcomes of an investigation into ways to improve the control and use of electricity for both electric utilities and residential end-users. These improvements can be achieved through electrical control possibilities where specific electrical devices could be either removed or time-shifted to less demanding periods. Two-way communicable electricity meters had

Popular Abstract in English Microorganisms can be used for production of pharmaceutical substances. With the introduction of gene technology, it is possible to transfer information from one organism to the other, thereby making the receiving organism capable of producing substances that it did not so before. This development is very important for e.g. production of therapeutic proteins However, whMicroorganisms can be used for production of pharmaceutical substances. With the introduction of gene technology, it is possible to transfer information from one organism to the other, thereby making the receiving organism capable of producing substances that it did not so before. This development is very important for e.g. production of therapeutic proteins However, when using living organisms fo

A stochastic model based on a probability density function (PDF) was developed for the investigation of different conditions that determine knock in spark ignition (SI) engine, with focus on the turbulent mixing. The model used is based on a two-zone approach, where the burned and unburned gases are described as stochastic reactors. By using a stochastic ensemble to represent the PDF of the scalar

Using Bloch waves to represent the full solution of Maxwell’s equations in periodic media, we study the limit where the material’s period becomes much smaller than the wavelength. It is seen that for steady-state fields, only a few of the Bloch waves contribute to the full solution. Effective material parameters can be explicitly represented in terms of dyadic products of the mean values of the non