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Enhanced Radioactive Material Source Security
Health Physics, 2016Requirements for additional security measures for sealed radioactive sources have evolved since they were first implemented after the terrorist events of 11 September 2001. This paper will describe the sequence of those measures, commencing with the early orders issued by the U.S. Nuclear Regulatory Commission to the May 2013 adoption of 10 CFR Part 37,
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Material-Driven Resolution Enhancements
2021Chapter 4 introduced important methods to enhance the resolution limits of lithography by modifying components of the optical imaging system, especially the mask and the illumination. These optical resolution enhancements aim to improve the image or intensity distribution that exposes the photoresist.
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Enhanced gas sensing with soft functional materials
2019 IEEE International Symposium on Olfaction and Electronic Nose (ISOEN), 2019The materials described in this work result from the self-assembly of liquid crystals and ionic liquids into droplets, stabilized within a biopolymeric matrix. These systems are extremely versatile gels, in terms of composition, and offer potential for fine tuning of both structure and function, as each individual component can be varied.
Susana I. C. J. Palma +9 more
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Alkali ash material, a novel material for infrastructure enhancement
Engineering Structures, 2001Many studies have focused on the conversion of fly ash from coal burning operations to a useful material. However, out of 55 million tons of fly ash generated in the United States, only 27% is being reused or recycled. Alkali Ash Material (AAM) is a novel material, which is made by converting fly ash to a useful construction material, with several ...
S. Jahanian, H. Rostami
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RFID enhances materials handling
Sensor Review, 1995Describes developments in radio frequency identification [RFID] techniques, using examples from existing applications in the motor industry, breweries and mail order companies. Looks at the miniaturization resulting from integrated circuit technology, the advantages of passive transponders and one of the latest versions of transponder, the Multipage [M/
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Absorption by an Actively Enhanced Material
Active Control of Vibration and Noise, 1994Abstract Active control is used here to improve the natural acoustic performances of an absorbent material. The method consists of backing an absorbent material panel with an actuator so as to control the panel backward impedance, and hence to optimize the material properties.
D. Thenail +3 more
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Technologically enhanced naturally occurring radioactive materials
Clinical Toxicology, 2009Naturally occurring radioactive materials (NORM) are ubiquitous throughout the earth's crust. Human manipulation of NORM for economic ends, such as mining, ore processing, fossil fuel extraction, and commercial aviation, may lead to what is known as "technologically enhanced naturally occurring radioactive materials," often called TENORM. The existence
David, Vearrier +2 more
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GRADIENT ENHANCED DAMAGE FOR QUASI-BRITTLE MATERIALS
International Journal for Numerical Methods in Engineering, 1996Summary: Conventional continuum damage descriptions of material degeneration suffer from loss of well-posedness beyond a certain level of accumulated damage. As a consequence, numerical solutions are obtained which are unacceptable from a physical point of view.
Peerlings, R.H.J. +3 more
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Photon radiation dose enhancement at material interfaces
Applied Radiation and Isotopes, 2001Experimental radiation dose-effect studies at a material's interface require high-resolution dose measurements resulting from the exposure of mounted samples on a supporting substrate. Reflections of photons and electrons from the substrate increase the effective dose to the sample relative to dose from the direct beam incident on the unbacked sample ...
H H, Hsu, J, Chen, D G, Vasilik
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Materialized View Tuning Mechanism and Usability Enhancement
2006The materialized view technology has been widely adopted in the data warehouse systems to improve query performance. Two key underlying techniques are materialized view incremental refresh and query rewrite. However, due to the potential complexity of the materialized view defining query and dependency on the materialized view change log, not all ...
Tsae-Feng Yu +3 more
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