Mit Kuppel und Minarett? : Was hinter der Kontroverse um Neubauten von Moscheen steckt

Mit Kuppel und Minarett? Häufig wird die Frage nach der Form einer Moschee als Stellvertreterfrage nach der Akzeptanz des Islam wahrgenommen. Doch könnten offene Diskussionen über die Gestaltung neuer Moscheen auch einen Weg zur funktionierenden Zivilgesellschaft darstellen, ohne dass Muslime und Nichtmuslime ihr eigenes Profil aufgeben müssen

Ordered assembly of the asymmetrically branched lipid-linked oligosaccharide in the endoplasmic reticulum is ensured by the substrate specificity of the individual glycosyltransferases

The assembly of the lipid-linked core oligosaccharide Glc3Man9GlcNAc2, the substrate for N-linked glycosylation of proteins in the endoplasmic reticulum (ER), is catalyzed by different glycosyltransferases located at the membrane of the ER. We report on the identification and characterization of the ALG12 locus encoding a novel mannosyltransferase responsible for the addition of the α-1,6 mannose to dolichollinked Man7GlcNAc2. The biosynthesis of the highly branched oligosaccharide follows an ordered pathway which ensures that only completely assembled oligosaccharide is transferred from the lipid anchor to proteins. Using the combination of mutant strains affected in the assembly pathway of lipid-linked oligosaccharides and overexpression of distinct glycosyltransferases, we were able to define the substrate specificities of the transferases that are critical for branching. Our results demonstrate that branched oligosaccharide structures can be specifically recognized by the ER glycosyltransferases. This substrate specificity of the different transferases explains the ordered assembly of the complex structure of lipid-linked Glc3Man9GlcNAc2 in the endoplasmic reticulu

Una propuesta teórica y metodológica para el análisis de la atenuación lingüística en español y portugués. La base de un proyecto en común (ES.POR.ATENUACIÓN)

Este artículo presenta y justifica una ficha para el análisis sociolingüístico y pragmático de la atenuación, y propone los fundamentos teóricos y metodológicos para un proyecto común en las diversas variantes del español y del portugués (ES.POR.ATENUACION). Se trata de una propuesta basada en las caracterizaciones anteriores de la atenuación y que, al mismo tiempo, pretende ofrecer soluciones a los problemas que un amplio estudio de corpus previo ha mostrado. Introduce numerosos parámetros que quieren ser una ayuda al analista en el reconocimiento de la atenuación, entre los que destacan los factores situacionales. Este proyecto busca la homogeneidad en los análisis cualitativos y cuantitativos de atenuación de los diversos investigadores, de tal manera que, una vez realizados los estudios particulares, sea posible establecer contrastes y comparativas. This paper provides and explains a data sheet to analyse the attenuation from a sociolinguistic and pragmatic point of view. The theoretical and methodological basis are established to create a common project to study the attenuation in the different varieties of Spanish and Portuguese (ES.POR.ATENUACION). The data sheet results from preliminary research based on a discursive corpus analysis and it proposes solutions for problems the analyst may face when recognising attenuation devices, especially those that come from situational factors. This present project aims at achieving homogeneity among the researchers in the pragmatic attenuation analysis, both qualitative and quantitative. Once particular analysis are carried out, we will focus on comparative and contrastive studies

Beam-based alignment of TTF RF-gun using V-Code

The beam dynamics simulation code V [1,2], based on the Ensemble Model [3], is being developed for on-line simulations. One practical application of the V-Code is the beam-based alignment (BBA) of accelerator (TESLA Test Facility) elements. Before we started with BBA thefirst beam position monitor (BPM1), located after the RFgun cavity, showed non-zero readings. Moreover the readings depended on RF-power, RF-phase and primary and secondary solenoid currents. This effect could be explained by misalignments of the gun and the solenoids. Such beam offsets must be compensated by means of steering coils but such a procedure can be one of the sources of increased emittances. Based on the V-Code solver a dedicated utility was developed for alignment studies. The laser beam mismatch at the cathode, as well as the primary and secondary solenoid displacements were considered as probable reasons for the misalignment of the beam. A new method for the correction of these misalignments combines a sequence of measurements, simulations and the elimination of the largest imperfections. This semi-automatic method applied to the TTF RF-gun yields a centering of the beam within the accuracy of the BPM1

Investigation of TTF injector alignment with the simulation Code V

The exact alignment of accelerator components is of crucial importance for the production of low emittance beams. Once a beam-line section is set up, a supplementary correction of misalignments implies the knowledge of its magnitude which is difficult to determine using conventional adjusting instruments. An excellent alternative to measure existing misalignments of accelerator components is to vary machine parameters and compare the behaviour of the beam with results obtained from a simulation. It is obvious that time consuming particle tracking programmes are notappropriate to reach this aim. Regarding computing time, the on-line simulation code V is advantageous compared to other beam dynamics programmes. The theoretical basis of V-Code, the “Ensemble Model”, consists of selfconsistent equations for the ensemble parameters that arederived from the Vlasov equation. The requirement to simulate misalignments such as offsets and tilts led to the development of the ALIGNMENT UTILITY which utilizes the solver of V-Code. The new utility enabled us to investigate the beam-line alignment of the TESLA Test Facility injector.This contribution presents the theoretical background and an illustrating example of the optimization process