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Die Eigenheit der letzteren Welle von literarischen Texten mit dem Hintergrund der Flucht und Vertreibung – unter anderen Günter Grass 'Im Krebsgang' (2002), Tanja Dückers 'Himmelskörper' (2003), Christoph Heins 'Landnahme' (2004) – liegt nicht in der Thematik per se (seit dem Nachkrieg wurde die Flucht und Vertreibung von Schriftstellern aus verschiedenen ideologischen Hintergründen thematisiert und fiktionalisiert), sondern in der Problematik der transgenerationellen Übertragung dieser traumatischen Erfahrungen. Schwerpunkt dieser Werke ist nicht darzustellen, wie die Kriegsgeneration den Zusammenbruch des Dritten Reichs erlebte, sondern die Überlieferung und die Verarbeitung dieser Ereignisse im Familienkreis, d.h. die Vermittlung der Wirkung solcher Erlebnisse auf die folgenden Generationen (Kinder, Enkelkinder). […] Viele dieser Werke weisen auf die Massenvergewaltigungen (oder zumindest auf die Panik davor) im Kontext von Flucht und Vertreibung hin, widmen aber der sexuellen Gewalt keine besondere Aufmerksamkeit im Text. Ausnahmen sind Hans-Ulrich Treichels (BRD, 1952) 'Der Verlorene' (1998) und Reinhard Jirgls (DDR, 1953) 'Die Unvollendeten' (2003). Für die Mütter der Erzähler dieser Texte waren die deutsche Niederlage und der Heimatverlust eng mit sexuellem Missbrauch verbunden. Als unbewältigte Schatten auf dem Familienleben müssen solche Erfahrungen bei der Analyse der intrafamiliären und intergenerationellen Beziehungen unbedingt berücksichtigt werden. Ziel dieses Referats ist es, zu untersuchen, welche Strategien beide Texte für die Repräsentation der Vergewaltigung bevorzugen, welche Rolle die sexuelle Gewalt als Chiffre der deutschen Niederlage in ihnen spielt, und inwieweit diese traumatische Erfahrung als Trope für die Nachkriegsrealitäten der beiden deutschen Staaten und der Integration der Vertriebenen fungiert.
Vor mehr als zehn Jahren beschrieb ich bereits Theorie und Praxis des Deutschunterrichts an der Universidade Aberta, ein Studienbereich, der 1996 auf Initiative von Maria Laura Bettencourt Pires (Direktorin des Bereichs der Fernstudien do Ensino a Distância) entstanden war. Doch sollte die Umsetzung des Regelwerks von Bologna an unserer Institution noch bis 2007 dauern. Portugal hatte diesen Vorgaben, die einen gemeinsamen europäischen Hochschulraum ermöglichen sollten, bereits 1999 zugestimmt. Sie werden im geänderten Hochschulrahmengesetz von 2005 berücksichtigt. Ihre Einführung an der Universidade Aberta fiel sowohl mit der Methode des E-learnings als auch mit der Einbettung der Germanistik in ein neues Kurssystem zusammen, die u.a. die Semestralisierung der Lehrfächer zur Vorraussetzung hatte. Diese Semestralisierung bedeutete die Verdoppelung der zu unterrichtenden Fächer, sowie ein Vielfaches der bisherigen Anzahl der Examen. Außerdem galt es zu berücksichtigen, dass der Lehrstoff der Literaturfächer (franz. und dt. Literatur) bis zu den Anfängen der jeweiligen nationalen Literaturen ausgedehnt werden sollte. Bis zu jenem Zeitpunkt wurde an der Universidade Aberta das Fach ‚Neuere deutsche Literaturgeschichte vom 18. Jh. (Aufklärung) bis zur Gegenwartsliteratur‘ gelehrt. Für unsere Germanistikabteilung war ich in einer Arbeitsgruppe dafür zuständig, Vorschläge zur Umstrukturierung (inkl. Semestralisierung) und Anpassung der ‚Línguas e Literaturas Modernas‘ (LLM) an das Regelwerk von Bologna auszuarbeiten.
Background: Many disabling human retinal disorders involve the central retina, particularly the macula. However, the commonly used rodent models in research, mouse and rat, do not possess a macula. The purpose of this study was to identify small laboratory rodents with a significant central region as potential new models for macular research.
Methodology/Principal Findings: Gerbillus perpallidus, Meriones unguiculatus and Phodopus campbelli, laboratory rodents less commonly used in retinal research, were subjected to confocal scanning laser ophthalmoscopy (cSLO), fluorescein and indocyanine green angiography, and spectral-domain optical coherence tomography (SD-OCT) using standard equipment (Heidelberg Engineering HRA1 and Spectralis™) adapted to small rodent eyes. The existence of a visual streak-like pattern was assessed on the basis of vascular topography, retinal thickness, and the topography of retinal ganglion cells and cone photoreceptors. All three species examined showed evidence of a significant horizontal streak-like specialization. cSLO angiography and retinal wholemounts revealed that superficial retinal blood vessels typically ramify and narrow into a sparse capillary net at the border of the respective area located dorsal to the optic nerve. Similar to the macular region, there was an absence of larger blood vessels in the streak region. Furthermore, the thickness of the photoreceptor layer and the population density of neurons in the ganglion cell layer were markedly increased in the visual streak region.
Conclusions/Significance: The retinal specializations of Gerbillus perpallidus, Meriones unguiculatus and Phodopus campbelli resemble features of the primate macula. Hence, the rodents reported here may serve to study aspects of macular development and diseases like age-related macular degeneration and diabetic macular edema, and the preclinical assessment of therapeutic strategies.
Activation of Notch1 signaling in neural progenitor cells (NPCs) induces self-renewal and inhibits neurogenesis. Upon neuronal differentiation, NPCs overcome this inhibition, express proneural genes to induce Notch ligands, and activate Notch1 in neighboring NPCs. The molecular mechanism that coordinates Notch1 inactivation with initiation of neurogenesis remains elusive. Here, we provide evidence that Prox1, a transcription repressor and downstream target of proneural genes, counteracts Notch1 signaling via direct suppression of Notch1 gene expression. By expression studies in the developing spinal cord of chick and mouse embryo, we showed that Prox1 is limited to neuronal precursors residing between the Notch1+ NPCs and post-mitotic neurons. Physiological levels of Prox1 in this tissue are sufficient to allow binding at Notch1 promoter and they are critical for proper Notch1 transcriptional regulation in vivo. Gain-of-function studies in the chick neural tube and mouse NPCs suggest that Prox1-mediated suppression of Notch1 relieves its inhibition on neurogenesis and allows NPCs to exit the cell cycle and differentiate. Moreover, loss-of-function in the chick neural tube shows that Prox1 is necessary for suppression of Notch1 outside the ventricular zone, inhibition of active Notch signaling, down-regulation of NPC markers, and completion of neuronal differentiation program. Together these data suggest that Prox1 inhibits Notch1 gene expression to control the balance between NPC self-renewal and neuronal differentiation.
Türkiye’de son yıllarda birçok üniversitede çeşitli dillere yönelik “mütercim-tercümanlık”, daha yeni bir tanımla “çeviribilim” bölümlerinin açılmasıyla birlikte çeviri eğitimi, bilimsel açıdan araştırmaya değer bir konu haline gelmiştir. Sayıları yıldan yıla artarak bugün 20’ye ulaşan çeviri bölümlerinin hedef ve temel ilkeleri, son on yıllarla ifade edilen evreli bir gelişim sürecinde kurumsallaşmaya yaklaşan “çeviribilim” alanı açısından araştırılmaya değer olgusal durum olarak karşımızda durmaktadır. Bu çalışmanın amacı, bir yandan Türkiye’deki üniversitelerin çeviri programlarını temel alarak sürdürülen eğitim-öğretim etkinliklerini, ortaya koydukları hedefler açısından ele alıp irdelemek; diğer yandan ise çeviri eğitimi uygulamaları ile çeviri eğitimine dönük olarak ortaya atılan yaklaşımlar arasındaki benzerlikleri - farklılıkları tartışmak, çeviri bölümlerinin eğitim-öğretim izlenceleri üzerinden çeviri eğitiminde görülen olası eksikliklere ve yetersizliklere ilişkin çözüm önerileri geliştirmektir.
Sucrose- and H+-dependent charge movements associated with the gating of sucrose transporter ZmSUT1
(2010)
Background: In contrast to man the majority of higher plants use sucrose as mobile carbohydrate. Accordingly proton-driven sucrose transporters are crucial for cell-to-cell and long-distance distribution within the plant body. Generally very negative plant membrane potentials and the ability to accumulate sucrose quantities of more than 1 M document that plants must have evolved transporters with unique structural and functional features.
Methodology/Principal Findings: To unravel the functional properties of one specific high capacity plasma membrane sucrose transporter in detail, we expressed the sucrose/H+ co-transporter from maize ZmSUT1 in Xenopus oocytes. Application of sucrose in an acidic pH environment elicited inward proton currents. Interestingly the sucrose-dependent H+ transport was associated with a decrease in membrane capacitance (Cm). In addition to sucrose Cm was modulated by the membrane potential and external protons. In order to explore the molecular mechanism underlying these Cm changes, presteady-state currents (Ipre) of ZmSUT1 transport were analyzed. Decay of Ipre could be best fitted by double exponentials. When plotted against the voltage the charge Q, associated to Ipre, was dependent on sucrose and protons. The mathematical derivative of the charge Q versus voltage was well in line with the observed Cm changes. Based on these parameters a turnover rate of 500 molecules sucrose/s was calculated. In contrast to gating currents of voltage dependent-potassium channels the analysis of ZmSUT1-derived presteady-state currents in the absence of sucrose (I = Q/τ) was sufficient to predict ZmSUT1 transport-associated currents.
Conclusions: Taken together our results indicate that in the absence of sucrose, ‘trapped’ protons move back and forth between an outer and an inner site within the transmembrane domains of ZmSUT1. This movement of protons in the electric field of the membrane gives rise to the presteady-state currents and in turn to Cm changes. Upon application of external sucrose, protons can pass the membrane turning presteady-state into transport currents.
Background: Occupational demands of educators are not very well researched. Nevertheless their work is subject to several requirements. Whether these demands have an effect on the work ability and the health status of employees has also not been examined. Furthermore it is unclear if the ownership type of day care centres have an influence on job satisfaction and work ability of the pedagogical staff and what kind of resources do exist. Previous studies were mainly based on questionnaire data. Objective data does not exist. Therefore the aim of this investigation is to collect precise data relating to work of educators.
Methods: Effects of different types of ownership of day care centres on job satisfaction and work ability of educators will be assessed with the help of objective real time studies in combination with multi-level psycho diagnostic measurements.
Discussion: The present study is the first of its kind. Up to now there are no computer-based real time studies on workflow of pedagogical staff with regard to assess their work-related stress. Following an exhaustive documentation of educators work processes the day-to-day task can be estimated and approaches for prevention can be developed. This can substantially contribute to an overall improvement of child care in Germany.
Background: Due to constantly rising air pollution levels as well as an increasing awareness of the hazardousness of air pollutants, new laws and rules have recently been passed. Although there has been a large amount of research on this topic, bibliometric data is still to be collected. Thus this study provides a scientometric approach to the material published on this subject so far.
Methods: For this purpose, data retrieved from the "Web of Science" provided by the Thomson Scientific Institute was analyzed and visualized both with density-equalizing methods and classic data-processing methods such as tables and charts.
Results: For the time span between 1955 and 2006, 26,253 items were listed and related to the topic of air pollution, published by 124 countries in 24 different languages. General citation activity has been constantly increasing since the beginning of the examined period. However, beginning with the year 1991, citation levels have been rising exponentially each year, reaching 39,220 citations in the year 2006. The United States, the UK and Germany were the three most productive countries in the area, with English and German ranked first and second in publishing languages, followed by French. An article published by Dockery, Pope, Xu et al. was both the most cited in total numbers and in average citation rate. J. Schwartz was able to claim the highest total number of citations on his publications, while D.W. Dockery has the highest citation rate per publication. As to the subject areas the items are assigned with, the most item were published in Environmental Sciences, followed by Meteorology & Atmospheric Sciences and Public, Environmental & Occupational Health. Nine out of the ten publishing journals with more than 300 entries dealt with environmental interests and one dealt with epidemiology.
Conclusions: Using the method of density-equalizing mapping and further common data processing procedures, it can be concluded that scientific work concerning air pollution and related topics enjoys unbrokenly growing scientific interest. This can be observed both in publication numbers and in citation activity.
Background: Leishmaniasis is a chronic disease that is found in various countries of the world. The aim of the current study was to investigate the impact of leishmaniasis on the world's research output. The present study assessed benchmarking of research output for the period between 1957 and 2006. Using large database analyses, research in the field of leishmaniasis was evaluated. Furthermore, cooperation between different countries was identified.
Results: The number of publications increased with time. Most publications came from Western countries such as the US, UK or Germany. Interestingly, countries like Brazil and India had a high research output. We found a substantial amount of cooperation between countries.
Conclusion: Although leishmaniasis is of limited geographic distribution it attracts a wide research interest. The central hub of research cooperation is the USA.
Soil biogenic NO emissions (SNOx) play important direct and indirect roles in chemical processes of the troposphere. The most widely applied algorithm to calculate SNOx in global models was published 15 years ago by Yienger and Levy (1995), was based on very few measurements. Since then numerous new measurements have been published, which we used to build up a atabase of field measurements conducted world wide covering the period from 1978 to 2009, including 108 publications with 560 measurements.
Recently, several satellite based top-down approaches, which recalculated the different sources of NOx (fossil fuel, biomass burning, soil and lightning), have shown an underestimation of SNOx by the algorithm of Yienger and Levy (1995). Nevertheless, to our knowledge no general improvements of this algorithm have yet been published.
Here we present major improvements to the algorithm, which should help to optimize the representation of SNOx in atmospheric-chemistry global climate models, without modifying the underlying principal or mathematical equations. The changes include: 1) Using a new up to date land cover map, with twice the number of land cover classes, and using annually varying fertilizer application rates; 2) Adopting the fraction of SNOx induced by fertilizer application based on our database; 3) Switching from soil water column to volumetric soil moisture, to distinguish between the wet and dry state; 4) Tuning the emission factors to reproduce the measured emissions in our database and calculate the emissions based on their mean value. These steps lead us to increased global yearly SNOx, and our total SNOx source ends up being close to one of the top-down approaches. In some geographical regions the new results agree better with the top-down approach, but there are also distinct differences in other regions. This suggests that a ombination of both top-down and bottom-up approaches could be combined in a future attempt to provide an even better calculation of SNOx.