143 research outputs found
Monitoring the Effect of Relative Humidity During Curing on Dielectric Properties of Composites at Microwave Frequencies
No full textThe electromagnetic parameters of a composite material can depend on the environment in which the material is cured. Nondestructive monitoring of composite materials during curing offers a means of assessing whether or not the final product will function as specified. Microwave measurements of complex permittivity and permeability have been made on a polyurea/polyurethane hybrid containing ferromagnetic filler particles. It was observed that the permittivity of the samples is strongly affected by environmental relative humidity whereas the effect on the permeability is less significant.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
This article appeared in Bowler, N., and E. R. Abram. "Monitoring the Effect of Relative Humidity During Curing on Dielectric Properties of Composites at Microwave Frequencies." In AIP Conference Proceedings, vol. 820, no. 1, pp. 469-476. American Institute of Physics, 2006, and may be found at
DOI: 10.1063/1.2184565.
Copyright 2006 American Institute of Physics.
Posted with permission
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Four Years of Operations and Results With FORTÉ
No full textThe FORTE (Fast Onboard Recording of Transient Events) satellite was launched on 29 August 1997 and has been in continuous operation since that time. FORTE was placed in a nearly circular, 825-km-altitude, 70 degrees inclination orbit by a Pegasus rocket funded by Air Force Space Test Program. The Department of Energy funded the FORTE satellite, which was designed and built at Los Alamos. FORTE's successful launch and engineered robustness were a result of several years of dedicated work by the joint Los Alamos National Laboratory/Sandia National Laboratory project team, led through mission definition, payload and satellite development, and launch by Dr. Stephen Knox. The project is now led by Dr. Abram Jacobson. FORTE carries a suite of instruments, an optical system and a rf system, for the study of lightning and anthropogenic signals. As a result of this effort, new understandings of lightning events have emerged as well as a more complete understanding of the relationship between optical and rf lightning events. This paper will provide an overview of the FORTE satellite and will discuss the on orbit performance of the subsystems
A technique for inferring outward displacement of magnetic flux surfaces in toroidal plasmas, using multichord interferometry
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Simple model for an upper bound on density fluctuations in a turbulent pinch
No full textA rough scaling relationship for plasma density fluctuations driven by magnetic field disturbances is derived. The result is found to agree with an earlier theory based on acoustic waves inflating magnetic flux surfaces
Comments on “Middle and upper atmosphere radar observations of ionospheric density gradients produced by gravity wave packets” by W. L. Oliver et al.
No full textLocalized plasma-density disturbance propagating along B in the interior of the ZT-40M reversed-field pinch
No full textObservation of ionospheric disturbances following a 5‐kt chemical explosion 2. Prolonged anomalies and stratifications in the lower thermosphere after shock passage
No full text“And Abram listened to the voice of Sarai”: R. Crumb’s pro-feminist interpretation of Sarah in the Bible
No full textIn 2009, R. Crumb produced a singular work: The Book of Genesis, Illustrated by R. Crumb, which purports to be a faithful, graphical interpretation of the book of Genesis from the Hebrew Bible. Among other sources, Crumb states that he used Robert Alter’s translation and commentary on Genesis to inform his work, along with the King James Version (KJV), the Jewish Publication Society Version (JPS) and Sarah the Priestess: The First Matriarch of Genesis by Savina J. Teubal; from those, he produced his own interpretation together with annotations to explain his interpretive decisions.
Remediating or adapting ancient texts into modern graphical comic books affects the reception of the text in many ways, but also offers both comics creators and readers different interpretive spaces within which they can allow different readings of texts to emerge. Such spaces are arguably affected by the way in which creators read and interpret original sources, as well as by the understanding and application of comics’ tools and resources employed to create the comic book remediations.
This paper will investigate Crumb’s utilisation of various comics tools and resources in his remediation of Genesis, arguing that his interpretation of the biblical text is presented through careful visual and textual decisions. I argue that these decisions in turn present the matriarchs (Sarah, Rebekah, Rachel and Leah) in Genesis, Illustrated as strong, dominant characters who are cast as potential leaders in an otherwise patriarchal world. This is a characterisation which subverts both biblically-traditional readings of the women of Genesis, as well as expectations of Crumb as an author. Accusations of misogyny and sexism have followed Crumb throughout his career, but, I argue, do not stand when the reader is presented with his pro-feminist matriarchal remediation of the biblical text
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Interferometric studies of plasma-density fluctuations in ZT-40M, using time-delayed correlation techniques
No full textDensity fluctuations in a reversed-field pinch have been studied using multichord CO/sub 2/-laser interferometry. Both non-periodic and quasi-periodic oscillations have been observed. The latter are m = 0 and m = 1 and remain torodially localized until the final stage of the discharge, when the m = 0 oscillation becomes toroidally coherent (with n = 1)
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