Refine
Year of publication
- 2021 (1420) (remove)
Document Type
- Article (1420) (remove)
Is part of the Bibliography
- yes (1420) (remove)
Keywords
- COVID-19 (17)
- Germany (10)
- machine learning (9)
- climate change (8)
- diffusion (8)
- analysis (7)
- embodied cognition (6)
- exercise (6)
- gender (6)
- governance (6)
Institute
- Institut für Biochemie und Biologie (134)
- Institut für Physik und Astronomie (133)
- Institut für Chemie (121)
- Institut für Geowissenschaften (102)
- Department Psychologie (71)
- Institut für Umweltwissenschaften und Geographie (71)
- Fachgruppe Betriebswirtschaftslehre (54)
- Fachgruppe Politik- & Verwaltungswissenschaft (51)
- Department Erziehungswissenschaft (50)
- Department Sport- und Gesundheitswissenschaften (48)
A fast high performance liquid chromatography tandem mass spectrometry multi-method based on an ACN-precipitation extraction was developed for the analysis of 41 (modified) mycotoxins in beer. Validation according to the performance criteria defined by the European Commission (EC) in Commission Decision no. 657/2002 revealed good linearity (R2 > 0.99), repeatability (RSDr < 15%), reproducibility (RSDR < 15%), and recovery (79–100%). Limits of quantification ranging from 0.04 to 75 µg/L were obtained. Matrix effects varied from −67 to +319% and were compensated for using standard addition. In total, 87 beer samples, produced worldwide, were analyzed for the presence of mycotoxins with a focus on modified mycotoxins, whereof 76% of the samples were contaminated with at least one mycotoxin. The most prevalent mycotoxins were deoxynivalenol-3-glucoside (63%), HT-2 toxin (15%), and tenuazonic acid (13%). Exposure estimates of deoxynivalenol and its metabolites for German beer revealed no significant contribution to intake of deoxynivalenol.
Ziel dieser Arbeit war, das Wesen der deutschen Steuerdisziplin und des ivorischen Steuersystems, welches aufgrund der Kolonialzeit auch als Erbe Frankreichs angesehen wird, historisch auszuarbeiten. Besonders betrachtet wurde der steuerrechtliche Rahmen, da dieser in hohem Maße dem Schutz der Ehe und Familie dient. Anhand der unterschiedlichen Steuersysteme werden Verbesserungsvorschläge für das Steuersystem Deutschlands und der Elfenbeinküste gegeben, um die Ehe und die Familie besser zu schützen. Das Hauptaugenmerk liegt bei meinen Betrachtungen immer auf dem Schutz des/der Kindes/r. Insbesondere wird dabei auf die Stellung der Frau und deren Wandlung in den letzten Jahrzehnten eingegangen und es werden Vorschläge gemacht, wie vor allem Alleinerziehende und berufstätige Mütter sowohl in Deutschland als auch in der Elfenbeinküste steuerlich entlastet werden können und verfügt daher über einen hohen aktuellen Bezug.
„Now is the winter of our discontent | Made glorious summer by this son of York“ – mit diesen Worten öffnet Shakespeares Richard III. Ein einziger Schau- spieler hat die Bühne betreten, beginnt zu reden und setzt so, alleine, das Stück in Gang – ein Novum für Shakespeare. Die frühneuzeitliche Bühne ist (fast) leer, die Zuschauer*innen hängen an den Lippen des Protagonisten, um durch seine Worte in die fiktive Welt des Dramas eingeführt zu werden.
Gleich mit dem ersten Wort versetzt Richard die Zuschauer*innen in eine andere Gegenwart: Fast wie eine hypnotische Anweisung konstituiert dieses „Now“ das Zeit-Raum-Gefüge der englischen Rosenkriege. Sich diesem thea- tralen „Now“ hinzugeben ist die Aufgabe der Zuschauer*innen. Sie sind auf- gerufen, „to forget (however briefly) everything they have experienced before. What matters is this ‚now‘, the hic et nunc of the theatre.“
Transitory starch granules result from complex carbon turnover and display specific situations during starch synthesis and degradation. The fundamental mechanisms that specify starch granule characteristics, such as granule size, morphology, and the number per chloroplast, are largely unknown. However, transitory starch is found in the various cells of the leaves of Arabidopsis thaliana, but comparative analyses are lacking. Here, we adopted a fast method of laser confocal scanning microscopy to analyze the starch granules in a series of Arabidopsis mutants with altered starch metabolism. This allowed us to separately analyze the starch particles in the mesophyll and in guard cells. In all mutants, the guard cells were always found to contain more but smaller plastidial starch granules than mesophyll cells. The morphological properties of the starch granules, however, were indiscernible or identical in both types of leaf cells.
Adaptive Force (AF) reflects the capability of the neuromuscular system to adapt adequately to external forces with the intention of maintaining a position or motion. One specific approach to assessing AF is to measure force and limb position during a pneumatically applied increasing external force. Through this method, the highest (AFmax), the maximal isometric (AFisomax) and the maximal eccentric Adaptive Force (AFeccmax) can be determined. The main question of the study was whether the AFisomax is a specific and independent parameter of muscle function compared to other maximal forces. In 13 healthy subjects (9 male and 4 female), the maximal voluntary isometric contraction (pre- and post-MVIC), the three AF parameters and the MVIC with a prior concentric contraction (MVICpri-con) of the elbow extensors were measured 4 times on two days. Arithmetic mean (M) and maximal (Max) torques of all force types were analyzed. Regarding the reliability of the AF parameters between days, the mean changes were 0.31–1.98 Nm (0.61%–5.47%, p = 0.175–0.552), the standard errors of measurements (SEM) were 1.29–5.68 Nm (2.53%–15.70%) and the ICCs(3,1) = 0.896–0.996. M and Max of AFisomax, AFmax and pre-MVIC correlated highly (r = 0.85–0.98). The M and Max of AFisomax were significantly lower (6.12–14.93 Nm; p ≤ 0.001–0.009) and more variable between trials (coefficient of variation (CVs) ≥ 21.95%) compared to those of pre-MVIC and AFmax (CVs ≤ 5.4%). The results suggest the novel measuring procedure is suitable to reliably quantify the AF, whereby the presented measurement errors should be taken into consideration. The AFisomax seems to reflect its own strength capacity and should be detected separately. It is suggested its normalization to the MVIC or AFmax could serve as an indicator of a neuromuscular function.