Patients with complicated paravisceral aortic aneurysms requiring urgent repair have limited surgical options. Such patients are typically treated open or chimney visceral stent-grafts. Back-table creation of physician-modified endografts (PMEGs) is another method to produce custom devices for such patients. However, this process challenging and time-consuming can be imprecise. Therefore, we ai...

Several studies of Drosophila melanogaster have reported patterns of DNA variation in genes located near centromeres or near the telomere of the X chromosome (Aguadé, Miyashita, and Langley 1989; Langley et al. 1993, 2000; Wayne and Kreitman 1996). There is good evidence of reduced crossing over for these regions in D. melanogaster. However, there are relatively few population data for such reg...

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We discuss some linear acceleration methods for alternating series which are in theory and in practice much better than that of Euler-Van Wijngaarden. One of the algorithms, for instance, permits one to calculate P (?1) k a k with an error of about 17:93 ?n from the rst n terms for a wide class of sequences fa k g. Such methods are useful for high precision calculations frequently appearing in ...

BACKGROUND Methotrexate (MTX) is currently the anchor drug widely used worldwide in the treatment of rheumatoid arthritis (RA). However, the therapeutic response to MTX has been shown to vary widely among individuals, genders and ethnic groups. The reason for this has been not clarified but it is considered to be partially due to several mechanisms in the cellular pathway of MTX including singl...

Introduction: The standing hypothesis for the formation of the lunar picritic glass beads is eruption in a volatile-driven fire fountain followed by degassing while suspended in a hot, turbulent vapor plume. Reanalysis of the Apollo 15 A, B, and C green glass beads from slide 15426,72, led to the discovery of beads with small patches of highly vesicular green glass adhering to their rims (fig. ...

OBJECTIVE To assess intra- and inter-observer reproducibility of a new point shear wave elastography technique (pSWE, S-Shearwave, Samsung Medison) and compare its accuracy in assessing liver stiffness (LS) with an established pSWE technique (Virtual Touch Quantification, VTQ). MATERIALS AND METHODS Thirty-three patients were enrolled in this Institutional Review Board-approved prospective st...

It is difficult for scientists to engineer elastomeric materials that are both strong and tough like spider dragline silk. Inspired by the morphology of spider dragline silk and motivated to develop strong, tough, elastomeric polyurethanes to be used in soldier applications I have prepared polyurethane/clay nanocomposites. Polymer/clay nanocomposites have exhibited great potential for providing...

The prolonged and localized delivery of nitric oxide (NO), a potent antithrombotic and antimicrobial agent, has many potential biomedical applications. In this work, the origin of the long-term storage stability and sustained NO release mechanism of S-nitroso-N-acetyl-D-penicillamine (SNAP)-doped CarboSil 20 80A polymer, a biomedical thermoplastic silicone-polycarbonate-urethane, is explored. L...