Die Schreiblernbiographie als Datenerhebungsmethode in einer empirischen Studie zum kreativen Schreiben in DaF

Mauritz L. Die Schreiblernbiographie als Datenerhebungsmethode in einer empirischen Studie zum kreativen Schreiben in DaF. In: Brinkschulte M, Kreitz D, eds. Qualitative Methoden in der Schreibforschung. Theorie und Praxis der Schreibwissenschaft. Vol 1. Bielefeld: wbv; 2017: 121-138

Scale-Up Effects Of Nanoparticle Production On The Burning Rate Of Composite Propellant

Exfoliated graphite nanoplatelets (xGnPs) were used to improve the flame resistant performance of glass fiber-reinforced polyester composites. Along with xGnP, traditional intumescent fire retardant ammonium polyphosphate (APP) was introduced into the polymer matrix as the dominant additive to reduce the heat release rate (HRR) and total heat released (THR) of the composites. The cone calorimeter test results Indicate that the optimal weight ratios of xGnP and APP were 3% and 17% by weight, respectively. At such weight ratio, a synergistic effect between xGnP and APP was demonstrated. The flame resistant performance of the nanocomposites was further improved by applying xGnP-dominant carbon nanofiber (CNF)/xGnP hybrid nanopaper onto the surface of the samples. Compared with the control sample, the integration of the HRR (THR) from 0 to 100 s of the sample coated with the nanopaper of CNF/xGnP = 1/3 shows more than 30% decrease in THR. Based on the results of mass loss, the nanopaper coating is also shown to enhance the structural stability of the samples under fire conditions, which affects the mechanical properties of the composites. The results show that the thermal properties, permeability of composites, and char formation play important roles in determining the fire behavior of the composites. Copyright © 2011 John Wiley & Sons, Ltd

(Table 2) Revised stacked record on magnetic susceptibility of ODP Site 162-984 sediments

Magnetic field and susceptibility data were collected using the geological high-resolution magnetometer tool string (GHMT) at three sites during Ocean Drilling Program Leg 162. Postcruise processing of the magnetic field data yielded a polarity stratigraphy for Holes 986C and 987E. A magnetic susceptibility record was measured at Hole 984B. Detailed analysis of the core and log susceptibility records at Hole 984B yielded an empirical tool resolution of the susceptibility measurement tool (SUMT) of 53 cm. At Site 984, where sedimentation rates were typically >10 cm/k.y., this gave a resolution of at least ~5000 yr. This data report summarizes the GHMT postcruise processing, method of interpretation, and analysis of the SUMT resolution

The Influence of Wait Time on Patient Satisfaction in the Orthopedic Clinic

Introduction: Patient satisfaction is of increasing importance in the delivery of quality healthcare and may influence provider reimbursement. The purpose of this study is to examine how patient wait time relates to their level of satisfaction and likelihood to recommend an orthopedic clinic to others. Methods: A retrospective analysis was performed on standardized new patient survey data collected at a single orthopedic clinic from June 2011 through October 2014. Results: A total of 3125 and 3151 responses were collected for satisfaction and likelihood to recommend the practice. The mean wait time was 27.3 ± 11.3 minutes. The likelihood of obtaining an “excellent” (odds ratio [OR]: 0.86, P = .01081) or “excellent/very good” (OR: 0.82, P = .0199) satisfaction demonstrated significant correlation with wait time in 15-minute intervals. The likelihood of obtaining an “agree” (OR: 0.9, P = .10575) and “strongly agree/agree” (OR: 0.85, P = .139) response to recommend the practice demonstrated no correlation during the same interval. Conclusion: Minimizing wait times in the orthopedic clinic may improve patient satisfaction but may not affect their likelihood of recommending the practice to others

Development Of Highly Active Titania-Based Nanoparticles For Energetic Materials

Recent advances in nanostructured fuels and oxidizers may lead to high-performance energetic materials for propulsion, but these nanoparticulates present serious challenges due to their inherent instability and safety hazards and difficulty of manufacture. In this paper, we develop an alternate route, the use of nanoscale metal-oxides to catalyze reactions between micrometer-scale energetic constituents. Methods to synthesize TiO2-based nanoparticles that are highly active toward energetic reactions and effectively incorporate them into energetic composites are reported. Activity was maximized by tuning the physical and chemical properties of the nano-TiO2 dispersion in the composite. An 81% increase in combustion rate was achieved with a nanoparticle loading of 1 wt %, making energetically active nano-TiO 2 a viable material for advanced propulsion, without the hazards and difficulties of competing technologies. © 2011 American Chemical Society