Modellierung und Implementation eines Vorlesungsplaners

Diese hier vorgestellte Applikation in Form eines Vorlesungsplaners kann an einer Universität verwendet werden, um Vorlesungen, Hörsäle und Vortragende zu organisieren

Ischemia/Reperfusion Injury of the Ascending Colon in Ponies: A Correlative Study Utilizing Microvascular Histopathology and Corrosion Casting

Volvulus of the ascending colon (ACV) in the horse results in microvascular injury and necrosis of the intestinal mucosa. This study investigated the site and type of microvascular injury which occurs within the mucosa and sub mucosa following ACV. Histopathology of volvulus treated ponies demonstrated mucosa! necrosis with microvascular hemorrhage and thrombosis. Thrombi occurred within the subepithelial capillaries and edema and hemorrhage developed throughout the mucosa and submucosa. Vascular casts allowed 3-D viewing of samples obtained from the entire pelvic flexure and demonstrated two distinct microvascular changes: 1) disruption of the colonic glandular capillary network occurred concomitantly with the mucosal injury, and 2) extensive endothelial leakage from the submucosal microvasculature contributes to edema formation. Thus, microcorrosion casting of the equine pelvic flexure provided an effective means to characterize the location and severity of vascular leakage and visualize the extent and severity of injury to the capillary network not easily depicted by histopathology. Microvascular casting in conjunction with routine histopathology provided additional information on the pathomorphologic changes in this model of ischemia/reperfusion injury

Endophyte microbiome of banana roots reveals high diversity and potential for agricultural uses

Similar to humans, plants are populated with different sets of microorganisms with potential roles on host and ecosystem functions. Endophytic microorganisms colonize root tissues inter- and/or intracellularly producing a wide range of compounds useful for plants growth as well as for protection against biotic and abiotic stresses. Clonally propagated crops such as banana are frequently multiplied by using tissue culture techniques in order to get uniform, pathogen-free plants. This process, however, also eliminates the endophyte beneficial microbiota and might have their fitness altered. To understand the microbial functional diversity of Musa spp., and its potential application in banana production systems, root-associated endophytic microorganisms (360 bacteria and 143 fungal) were isolated from 20 Musa spp. genotypes of the ex situ collection in CORBANA, Guapiles, Costa Rica. Analyses of specific genome regions (16S rDNA for bacteria and tefa-1á or ITS for fungi) revealed 21 different bacterial genera, with Klebsiella, Enterobacter, Bacillus, Acinetobacter and Burkholderia as the most frequent. Trichoderma spp. and Fusarium oxysporum prevailed among the 12 genera of fungi identified. Most isolates are known to be associated with banana, but genera such as Sphingobacterium, Grimontella, Providencia, Pleosporaceae have not been reported previously. Microorganisms with no significant similarities to the analysed database (04 bacteria and 03 fungi) were found and will probably constitute new descriptions. Some endophytes were more frequent or uniquely found on certain banana genotypes, but endophyte-host specificity needs to be further verified. Partial characterisation of the collection showed that T. asperellum isolates from cv. Yangambi Km5 (AAA) can significantly inhibit (up to 80.5 %) the mycelial growth of the banana pathogen Fusarium oxysporum f. sp. cubense. When a set of selected bacteria was inoculated in the tissue culture plants of the commercial cultivar Cavendish, three bacterial isolates (Bacillus aryabhattai, Burkloderia spp. and unknown) significantly increased the dry root weight. These results revealed a high and multifunctional diversity of culturable endophytes from Musa spp. roots, with a strong potential for new product developments and methods to enhance productivity in banana. Opportunities also exist to explore Musa genotypes in their native habitat and to characterise non-culturable microorganisms

The ATLAS magnet test facility at CERN

The magnet system for the ATLAS detector at CERN consists of a Barrel Toroid (BT), two End-Cap Toroids (ECT) and a Central Solenoid (CS). The overall dimensions of the system are 20 m in diameter by 26 m in length. Before underground installation all coils will be tested on surface in a magnet test facility which is under construction. Moreover two model coils are tested as well as subsystems. In this paper the design and construction of the test facility is presented. (3 refs)

Temporal and spatial field evaluations highlight the importance of the presymptomatic phase in supporting strong partial resistance in Triticum aestivum against Zymoseptoria tritici

peer-reviewedZymoseptoria tritici, the causal agent of septoria tritici blotch (STB), remains a significant threat to European wheat production with the continuous emergence of fungicide resistance in Z. tritici strains eroding the economic sustainability of wheat production systems. The life cycle of Z. tritici is characterized by a presymptomatic phase (latent period, LP) after which the pathogen switches to an aggressive necrotrophic stage, when lesions bearing pycnidia quickly manifest on the leaf. As minimal knowledge of the possible role of the LP in supporting STB resistance/susceptibility exists, the goal of this study was to investigate the spatial and temporal association between the LP and disease progression across three locations (Ireland – Waterford, Carlow; UK – Norwich) that represent commercially high, medium and low STB pressure environments. Completed over two seasons (2013–2015) with commercially grown cultivars, the potential of the LP in stalling STB epidemics was significant as identified with cv. Stigg, whose high level of partial resistance was characterized by a lengthened LP (c. 36 days) under the high disease pressure environment of Waterford. However, once the LP concluded it was followed by a rate of disease progression in cv. Stigg that was comparable to that observed in the more susceptible commercial varieties. Complementary analysis, via logistic modelling of intensive disease assessments made at Carlow and Waterford in 2015, further highlighted the value of a lengthened LP in supporting strong partial resistance against STB disease of wheat

Performance of the ATLAS Electromagnetic Calorimeter End-cap Module 0

The construction and beam test results of the ATLAS electromagnetic end-cap calorimeter pre-production module 0 are presented. The stochastic term of the energy resolution is between 10% GeV^1/2 and 12.5% GeV^1/2 over the full pseudorapidity range. Position and angular resolutions are found to be in agreement with simulation. A global constant term of 0.6% is obtained in the pseudorapidity range 2.5 < eta < 3.2 (inner wheel)

Performance of the ATLAS electromagnetic calorimeter end-cap module 0

The construction and beam test results of the ATLAS electromagnetic end-cap calorimeter pre-production module 0 are presented. The stochastic term of the energy resolution is between 10% GeV^1/2 and 12.5% GeV^1/2 over the full pseudorapidity range. Position and angular resolutions are found to be in agreement with simulation. A global constant term of 0.6% is obtained in the pseudorapidity range 2.5 eta 3.2 (inner wheel)

Readout technologies for directional WIMP Dark Matter detection

The measurement of the direction of WIMP-induced nuclear recoils is a compelling but technologically challenging strategy to provide an unambiguous signature of the detection of Galactic dark matter. Most directional detectors aim to reconstruct the dark-matter-induced nuclear recoil tracks, either in gas or solid targets. The main challenge with directional detection is the need for high spatial resolution over large volumes, which puts strong requirements on the readout technologies. In this paper we review the various detector readout technologies used by directional detectors. In particular, we summarize the challenges, advantages and drawbacks of each approach, and discuss future prospects for these technologies