We tested the aerodynamic function of nasal conchae in birds using CT data from an adult male wild turkey (Meleagris gallopavo) to construct 3D models of its nasal passage. A series of digital "turbinectomies" were performed on these models and computational fluid dynamic analyses were performed to simulate resting inspiration. Models with turbinates removed were compared to the original, unmod...

Many palatable insects, for example hoverflies, deter predators by mimicking welldefended insects such as wasps. However, for human observers, these flies often seem to be little better than caricatures of wasps – their visual appearance and behaviour are easily distinguishable. This imperfect mimicry baffles evolutionary biologists, because one might expect natural selection to do a more thoro...

INTRODUCTION 3 This document discusses considerations for the DAVINCI instrument’s pupil image quality and pupil mask selections. The DAVINCI instrument (Adkins et al., 2010) requires a cold pupil mask to control background, especially in the near-IR wavelengths. Different size masks may be required to balance throughput loss and background suppression, with additional masks required for the DA...

A two-phase fluid flow model solving Navier-Stokes equations was employed in this paper to investigate liquid sloshing phenomena in cubic tank with horizontal baffle, perforated vertical baffle, and their combinatorial configurations under the harmonic motion excitation. Laboratory experiment of liquid sloshing in cubic tank with perforated vertical baffle was carried out to validate the presen...

A 34-year-old man with complete transposition of the great arteries (D-TGA) presented for the first time to our clinic. He previously underwent balloon atrial septostomy (Rashkind procedure) early after birth followed by a Senning procedure at the age of 2 months together with ligation of a patent ductus arteriosus. He has been asymptomatic since his surgery. Transthoracic echocardiogram was te...

Over 85% of all new heat exchanger applications in oil refining, chemical, petro-chemical, and power generation are accommodated through the use of conventional shell and tube type heat exchangers. The fundamental basis for this statistic is shell and tube technology is a cost effective, proven solution for a wide variety of heat transfer requirements. However, there are limitations associated ...

“My own behavior baffles me. For I find myself not doing what I really want to do but doing what I really loathe.” Saint Paul Gul–Pesendorfer [2001] give a decision–theoretic model of temptation building on a framework of Dekel, Lipman, and Rustichini [2001]. We argue that the axiom they use to identify temptation, set betweenness, rules out plausible and interesting forms of temptation. We pro...