Two new conifer morphospecies represented by a secondary xylem are reported for the Lower Cretaceous Baqueró Group (Santa Cruz Province, Argentina). Agathoxylon sp. is characterized by poorly defined growth rings, predominantly uniseriate pitting in the radial wall of the tracheids, cross fields with 1-6 pits and uniseriate rays. These features are shared with the leafy branches described for t...

Measurements of the open circuit potential AA1050 were performed in 10 mM CrO3, and Al-matrix around intermetallic particles was found to dissolve locally. Pre-immersion 1 M NaOH promoted dissolution particles, resulting improvement pitting corrosion resistance NaCl solutions. The provided by molybdate treatment is effectively improved pre-immersion NaOH. maximum pit depth specimen treated MoO3...

Editorial Summary In her contribution »Reflexive, Reflexivity, and the Concept of Reflexive Design« Margitta Buchert frames notion reflexive design research, pitting various underlying concepts against one another forming framework for research. As such, she emphasizes punctuated distinction reflection as an integrated component research reflexion alignment attitude. this sense highlights recip...

Although steel involute gears are the standard solution for gear transmissions, they tend to suffer from poor pitting resistance. Pitting typically occurs when tooth flanks have high equivalent curvature at contact point and/or is not constant across path leading pressures and development of surface fatigue. In this paper a new optimization method presented produce spur with improved performanc...