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MRI (Magnetic Resonance Imagining) is a powerful medical diagnostic tool. Its value would be greatly increased if it was possible to physically manipulate objects within the MRI during imaging. However, the extraordinarily strong magnetic fields used by the MRI make conventional electromagnetic components, such as actuators and sensors, unusable. In this(More)
A pilot-scale permeable reactive barrier (PRB) consisting of granular iron was installed in May 1995 at an industrial facility in New York to evaluate the use of this technology for remediation of chlorinated volatile organic compounds (VOCs) in groundwater. The performance of the barrier was monitored over a 2-year period. Groundwater velocity through the(More)
MRI (magnetic resonance imaging) is a powerful medical diagnostic tool. Its value would be greatly increased if it were possible to physically manipulate objects within the MRI during imaging. However, the extraordinarily strong magnetic fields used by the MRI make conventional electromagnetic components, such as actuators and sensors, unusable. In this(More)
Stable carbon isotopic analysis, in combination with compositional analysis, was used to evaluate the performance of an iron permeable reactive barrier (PRB) for the remediation of ground water contaminated with trichloroethene (TCE) at Spill Site 7 (SS7), F.E. Warren Air Force Base, Wyoming. Compositional data indicated that although the PRB appeared to be(More)
Nanosized Fe0 exhibits markedly different anaerobic corrosion rates in water compared to that disseminated in moist quartz sand. In water, hydrogen production from corrosion exhibits an autocatalytic style, attaining a maximum rate of 1.9 mol kg(-1) d(-1) within 2 d of reaction. The rate then drops sharply over the next 20 d and enters a period of uniformly(More)
Zero valent iron (ZVI; Fe(0)) has been successfully employed for the transformation and subsequent detoxification of a wide range of environmental contaminants, including chlorinated organics, heavy metals, nitroaromatics and, to some degree, per-chlorate. The combined use of ZVI plus controlled release carbon has been shown to generate environmental(More)
Recently a colleague passed on a document from a competitor's (Regenesis) web page entitled " Comparative Technology Review – Vegetable Matter/ZVI Blends: Technical Mechanisms and Lack of Performance ". Like most professional readers of such publications, we understand these are not scientific documents but that they are written mostly by salespeople and,(More)
The molecular mechanisms directing vertebrate heart asymmetry have been subject to many Multiple pathways in the midline regulate concordant brain, heart and gut left-right asymmetry. PKCg regulates syndecan-2 inside-out signaling during Xenopus left-right development. Of mice and men: Dissecting the genetic pathway that controls left-right asymmetry in(More)