Electrochemical reactions at the anode triple phase boundary (TPB) proceed on the basis of the fuel concentration, which depends on transport processes within the porous anode and the heterogeneous reforming chemistry. Microscale modeling is needed to describe these interactions with an acceptable accuracy. The aim of this article is to investigate if it is possible to use a multiscale approach to

Significant saving potential is believed to exist in all economic activities of the private sector of MENA countries. However this potential is hardly explored in systematic ways. Particularly in the context of a country like Saudi Arabia, where the cost of water production is among the highest in the world, the incentives to examine this potential should be high. In 2007, a group of private secto

Popular Abstract in Swedish Multikonjugerad Adaptiv Optik för Astronomiska Teleskop 1. Atmosfärisk turbulens Allt sedan man på 1600-talet började bruka optiska instrument inom astronomin, för att understödja det mänskliga ögat då man beskådade stjärnhimlen, har astronomer strävat efter att bygga allt större och bättre teleskop för att kunna se längre ut i rymden och skönja allt ljussvagare objekt.This work analyses several aspects of multi-conjugate adaptive optics (MCAO) for astronomy. The research ranges from fundamental and technical studies for present-day MCAO projects, to feasibility studies of high-order MCAO instruments for the extremely large telescopes (ELTs) of the future. The first part is an introductory exposition on atmospheric turbulence, adaptive optics (AO) and MCAO, esta

In order to study nanoparticles in an efficient way, new characterization methods has to be developed in parallel with the efforts to develop new preparation methods. One such characterization method is cryo-transmission electron microscopy (cryo-TEM) which gives the possibility to image nanoparticles as they are in solution. The particle-containing solution is plunge-frozen, creating a thin froze

The first part of Syntax of the Modern Greek Verbal System(second thoroughly revised edition) deals with the grammatical categrories of verbs (voice, aspect etc.) and the use of each verbal form (ëýíù, ëýóù, Ýëõíá, Ýëõóá, imperatives etc.). The second part deals in detail with the functions of the particles èá, áò and especially õá. Two brief final chapters cover indirect speech and the use of the

Bioenergy is booming around the world and with the expansion comes exciting opportunities and some disturbing risks. Learning about bioenergy – from technologies, to resources, to policies – is important to the success and sustainability of the bioeconomy. This interactive guide for school students (16-18 years) and teachers opens the door to understanding and engaging in the transition from the f

Om författaren Vilhelm Moberg och hans syn på filmmediet.