Self-lubricating polymer compounds are currently used for a wide range of applications such as bearings, gears, and water meters. Under severe conditions such as high pressure, high velocity, and/or high temperatures, the material fails (PV limit). In this study, we investigated the effect of graphite on the tribological properties of polystyrene (PS) with “ball-on-three-plates” tests. Graphite...

[1] The ocean surface rapidly exchanges heat, freshwater, and gases with the atmosphere, but once water sinks into the ocean interior, the inherited properties of seawater are closely conserved. Previous water‐mass decompositions have described the oceanic interior as being filled by just a few different property combinations, or water masses. Here we apply a new inversion technique to climatol...

We explore filled pause usage in spontaneous medical narration. Expert physicians viewed images of dermatological conditions and provided a description while working toward a diagnosis. The narratives were analyzed for differences in filled pauses used by attending (experienced) and resident (in-training) physicians and by male and female physicians. Attending physicians described more and used...

In this paper we give an alternate proof that it is always possible to complete partial Latin squares with two filled rows and two filled columns, except for a few small counterexamples. The proof here is significantly shorter than the most recent proof by Adams, Bryant, and Buchanan. Additionally, we find sufficient conditions under which a partial Latin square with two filled rows and at leas...

H. K. Poswal, S. Karmakar, Pawan K. Tyagi, D. S. Misra, E. Busetto, Surinder M. Sharma , and A. K. Sood 1 High Pressure Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India 2 Department of Physics, Indian Institute of Technology, Powai, Mumbai 400076, India 3 Syncrotron Trieste – Elettra, S.S.-14 Km 163,5 in Area Science Park, Basoviza, 34012 Trieste, Italy 4 Department of Phys...

It is shown that any partial Latin square of order at least six which consists of two filled rows and two filled columns can be completed.

In recent years, important efforts have been focused on rapid production of tools using Rapid Prototyping and Manufacturing (RP&M) technologies such as the Stereo-Lithography Apparatus (SLA). One of the applications is the development of rapid polymer tooling such as dies for injection molding. For these applications, optimal thermal as well as mechanical properties of final tools are of signif...