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Item type: Item , Einfluss einer kranial eingebrachten Schraube auf die Verformung und damit auf die Primärstabilität von zementfreien Hüftpfannen - eine in vitro Analyse(2025) Breidenbach, Salome Loisa ZoeDie Hauptursache für Revisionen von Hüftendoprothesen ist die aseptische Lockerung. Ein wichtiger Faktor, um diese Komplikation bei zementfreien Implantaten zu verhindern, ist eine gute Osteointegration. Grundlage hierfür ist die Primärstabilität insbesondere der acetabulären Komponente. Bei der Hüftpfanne soll das zusätzliche Einbringen einer kranialen Schraube für mehr Stabilität sorgen. Allerdings ist vorstellbar, dass das Implantat durch den punktuellen Druck der Schraube verformt werden und damit die Kongruenz des Implantats mit dem vorher gefrästen Knochen nicht mehr gegeben sein könnte. Hierdurch könnte wiederum die Primärstabilität beeinflusst werden. Diese potenzielle Verformung und ihr Einfluss auf die Primärstabilität im Knochen sollen in dieser in vitro Analyse in fünf verschiedenen Presspassungs-Hüftpfannen untersucht werden. Die Hüftpfannen wurden in ein Kunstknochenmodell implantiert und unter Einleitung von Drehmomenten, die den physiologischen Gang simulieren, auf Primärstabilität in Form von Mikrorelativbewegung des Implantats in Relation zum Knochenmodell geprüft. Anschließend wurde während des Einbringens der kranialen Schraube von Hand durch in die Pfanne eingeklebte hochauflösende Messfühler die Verformung der verschiedenen Pfannen und daraufhin erneut die Primärstabilität gemessen. Bei allen Hüftpfannen zeigte sich beim Einbringen der Schraube eine Verformung. Die Mikrorelativbewegung nach Einbringen der Schraube sank im Mittelwert bei der REVISIO S SYSTEM®, Ecofit® and EPORE® und stieg bei der Allofit® and DELTA TT® an. Diese Unterschiede waren allerdings nicht signifikant. Ein signifikanter Zusammenhang zwischen dem Ausmaß der Verformung und der Veränderung der Mikrorelativbewegung ließ sich daher nicht feststellen. Da der gewünschte Effekt einer verbesserten Primärstabilität durch das Einbringen einer Schraube bei zwei der fünf Pfannenmodelle nicht eintrat, sondern sich die Primärstabilität im Mittel sogar verringerte, sollte der Nutzen dieser Schraube Inhalt weiterer Untersuchungen sein, um unnötige Operationsschritte und ein erhöhtes Risiko für aseptische Lockerungen zu vermeiden. Ebenfalls sollte ein möglicher Effekt der ermittelten Vorformung der Implantate durch das Einbringen einer kranialen Schraube auf das Ergebnis des Eingriffs weiter überprüft werden.Item type: Item , Increasing microplastic concentrations have nonlinear impacts on the physiology of reef-building corals(2025) Tirpitz, Vanessa; Hutter, Mona; Hutter, Hanna; Prume, Julia; Koch, Martin; Wilke, Thomas; Reichert, JessicaThe pollution of marine environments with plastics, particularly microplastic (MP, i.e., plastic particles <5 mm), is a major threat to marine biota, including corals. While the effects of MPs are increasingly well understood, knowledge of how different concentrations of naturally occurring MP mixtures affect reef-building corals is still limited. Therefore, we aimed to elucidate the relationship of MP concentrations and their effects on reef-building corals. For this, we exposed two reef-building coral species (Stylophora pistillata and Pocillopora verrucosa) in a 12-week experiment to MPs at a gradient of concentrations (0, 0.1, 1, 10, and 100 mg⋅L 1). Specifically, we examined effects on the coral host physiology (i.e., surface and volume growth, calcification, necrosis, and polyp activity), and the photosynthetic activity of the photosymbionts (i.e., effective and maximum quantum yield, maximum relative electron transport rate, minimum saturating irradiance, and light capture efficiency). To mimic natural conditions, we used a MP mixture consisting of six polymers in forms of fibers and fragments. Both coral species showed reduced growth rates, necrosis, lower polyp activity, and an upregulation of photosynthesis, which intensified with increasing MP concentrations. While the effects on the coral host mostly showed basic linear or nonlinear dose-response relationships, the effects on the photosymbionts revealed more complex nonlinear dose-response relationships, and photosynthesis was only upregulated after a species-specific threshold. We found that high and extreme pollution scenarios caused strong adverse effects on coral physiology, while current low to moderate concentrations had minor effects. Increasing concentrations had amplifying effects, likely due to the disproportionately higher frequency of entanglement, leading to more frequent direct contact and potential transfer of toxins or pathogens. These results suggest that corals can cope with current average pollution levels. However, they also highlight the need for measures to limit permanent increases of MP pollution to protect the health of coral reefs.Item type: Item , Data for "London Dispersion Favors cis-Selectivity in the Johnson-Corey-Chaykovsky Epoxidation"(2026-02-13) Domanski, Marvin H. J.Contains 1H and 13C Data for all new compounds (as listed below) to accompany 'London Dispersion Favors cis-Selectivity in the Johnson-Corey-Chaykovsky Epoxidation' 1-[(3,5-Diethylphenyl)methyl] tetrahydrothiophenium tetrafluoroborate 1-[(3,5-Di-iso-propyl-phenyl)methyl] tetrahydrothiophenium tetrafluoroborate 1-[(3,5-Dimethylphenyl)methyl] tetrahydrothiophenium tetrafluoroborate 1-[(3,5-Di-tert-butyl-phenyl)methyl] tetrahydrothiophenium tetrafluoroborate 1-[(Phenyl)methyl]tetrahydrothiophenium tetrafluoroborate Anti-1,2-Bis[3,5-di-tert-butyl]phenyl-2-hydroxyethyl(dimethyl) sulfonium iodide Syn-1,2-Bis[3,5-di-tert-butyl]phenyl-2-hydroxyethyl(dimethyl) sulfonium iodide filename format (in order): (1H or 13C NMR) - Compound name data format (as separated rows): chemical shift, IntensityItem type: Item , Raw data for a Pacific white shrimp feeding trial using black soldier fly meal as a fishmeal substitute(2026-02-14) Bendag, SlimThe dataset contains the raw data from a 42-day randomised controlled feeding trial investigating the effects of replacing fishmeal with black soldier fly (Hermetia illucens) meal in pelleted diets on the performance of Pacific white shrimp (Litopenaeus vannamei). The trial compared three dietary treatments: a control diet containing 0% replacement (0R), a diet with 50% fishmeal replacement (50R), and a diet with 100% fishmeal replacement (100R). Outcomes assessed included water quality, growth performance, survival, body composition, and fatty acid profile. The dataset consists of three data sheets: 1. Raw data for water quality parameters, including all recorded water quality variables measured throughout the 42-day trial across the three dietary treatments (0R, 50R, and 100R). Named: “Raw data table 1: Raw data of the water parameters measured in a 42-day randomized controlled feeding trial evaluating the effects of fishmeal replacement with black soldier fly (Hermetia illucens) meal in pelleted diets (50% and 100% replacement levels) compared to a control diet (0% replacement) on growth performance, survival, body composition, and fatty acid profile of Pacific white shrimp (Litopenaeus vannamei).” 2. Raw individual growth performance data, collected at two sampling points (21 and 42 days), including initial and final length, initial and final weight, feed input, calculated weight gain (%), length gain (%), specific weight growth rate (% per day), specific length growth rate (% per day), and feed conversion ratio (FCR) for each treatment group (0R, 50R, and 100R). Named: “Raw data table 2: Raw individual growth performance data collected at two sampling points (21 and 42 days) during a 42-day randomized controlled feeding trial evaluating the effects of fishmeal replacement with black soldier fly (Hermetia illucens) meal in pelleted diets (50% and 100% replacement levels) compared to a control diet (0% replacement) on growth performance, survival, body composition, and fatty acid profile of Pacific white shrimp (Litopenaeus vannamei).” 3. Statistical analysis of growth parameters, including treatment means ± standard deviations, results of Shapiro-Wilk tests for normality, Levene’s tests for homogeneity of variance, p-values from one-way ANOVA or Kruskal–Wallis tests (as appropriate), and post hoc pairwise comparisons using Tukey’s HSD (parametric) or Dunn’s test (non-parametric) at 21 and 42 days of sampling. Named: “Raw data table 3: Statistical analysis of growth parameters at 21 and 42 days of sampling in a 42-day randomized controlled feeding trial evaluating the effects of fishmeal replacement with black soldier fly (Hermetia illucens) meal in pelleted diets (50% and 100% replacement levels) compared to a control diet (0% replacement) on growth performance, survival, body composition, and fatty acid profile of Pacific white shrimp (Litopenaeus vannamei). Data normality was assessed using the Shapiro–Wilk test, and homogeneity of variances was evaluated using Levene’s test. Differences among treatments were analyzed using one-way ANOVA when assumptions were met or the Kruskal–Wallis test when assumptions were violated. Post hoc pairwise comparisons were conducted using Tukey’s HSD test for parametric data or Dunn’s test for non-parametric data, with corresponding p-values reported.”Item type: Item , Raw data for a study investigating sustainable tank construction materials for shrimp aquaculture(2025-05-30) Bendag SlimRaw data for a study investigating sustainable tank construction materials for shrimp aquaculture The dataset contains the raw data from a randomised controlled trial investigating whether wood can serve as a sustainable alternative tank construction material in Pacific white shrimp (PWS) aquaculture. The trial compared the effects of tanks lined with Douglas fir wood, oak wood, and conventional fibreglass reinforced plastic (FRP) on shrimp survival, growth, and feed conversion rates over a 42-day period. The dataset consists of five data sheets 1 to 5: 1. Raw data for water quality parameters (temperature, salinity, nitrite, pH, dissolved oxygen, nitrate, and phosphate) measured weekly in 12 aquaria over the course of the 42-day trial across the three tank material treatments (FRP, Douglas fir, and oak). Named “Table S1: Raw data of the water parameters measured weekly in a 42-day controlled trial investigating the effect of tank material on growth and survival parameters of Pacific white shrimp”. 2. Raw data for growth and feed conversion parameters of Pacific white shrimp (PWS), including initial and final body weight, feed input, mortality, calculated weight gain (%), specific growth rate (% per day), and feed conversion ratio (FCR) per tank for each treatment group. Named “Table S2: Raw data from a 42-day controlled trial investigating the effect of tank material (oak, Douglas fir and fiberglass reinforced plastic (FRP) as control) on growth parameters and survival of Pacific white shrimp. Treatment names correspond to the respective type of material used to cover 60% of the trial aquariums' surface. For figure 2 (A: Survival rate, C: Weight gain, D: Specific growth rate and E: Feed conversion ratio)”. 3. Raw data for survival analysis, including individual survival time (in days), mortality events (1 = death, 0 = survival), and corresponding treatment codes (1 = FRP, 2 = Douglas fir, 3 = oak) for the Kaplan-Meier survival analysis. Named “Table S3: Raw data for Figure 2B and the Kaplan-Meier survival time analysis for a 42-day controlled trial investigating the effect of tank material on growth and survival parameters of Pacific white shrimp. Days correspond to the days that an individual shrimp survived; Event correspond to the Death event, 0 = Survival and 1=Death; Treatment refers to codes for the treatments where 1, 2 and 3 correspond respectively to Fiberglass reinforced plastic, Douglas fir and oak”. 4. Information on statistical analyses conducted, including results of Levene’s test for homogeneity of variance and Shapiro-Wilk test for normality, treatment means ± standard deviations for all key outcome parameters, p-values for ANOVA and post hoc Tukey pairwise comparisons between treatments (for survival rate, weight gain, specific growth rate and feed conversion ratio), and p-values and pairwise comparisons for the Kaplan-Meier survival analysis. Named “Table S4: Statistical summary of survival, growth rate, specific growth rate and feed conversion performance of Pacific white shrimp (PWS) reared in tanks lined with fiberglass reinforced plastic (FRP), Douglas fir, and oak wood”. 5. Raw Gas Chromatography–Mass Spectrometry (GC-MS) data from water samples collected at three sampling time points during a 42-day controlled trial investigating the effect of tank material (fiberglass reinforced plastic (FRP), Douglas fir, and oak) on growth and survival parameters of Pacific white shrimp. For each detected chromatographic peak, retention time (tR), average peak area (with a peak area filter of >10000 counts), standard deviation of peak area, and relative peak area (%) are reported separately for each sampling time point. Tentative compound identification based on NIST mass spectral library matching, including suggested compound name, CAS registry number, and reverse match score (R-Match), is provided where available. Named “Raw wood extractive profile: Raw temporal Gas Chromatography–Mass Spectrometry (GC–MS) water chemical profiles measured at S1 (start of trial), S2 (day 21), and S3 (end of trial) during a 42-day controlled trial assessing temporal qualitative changes in wood extractives in water exposed to fiberglass reinforced plastic (FRP), Douglas fir, and oak as aquaculture tank materials”