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As fire protection engineering moves towards the implementation of performance- based fire codes, the use of validated fire models is becoming a necessity. Part of the validation process involves demonstrating model capabilities for predicting key fire environment parameters. One of the key parameters for estimating time to ignition and fire growth is the heat transfer rate to compartment surfaces ...

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NANOCRYSTALLINE MATERIALS PROVIDE SUPERIOR MECHANICAL PROPERTIES COUPLED WITH IMPROVED WEAR AND CORROSION RESISTANCE. RESEARCHERS ARE DEMONSTRATING THE ABILITY TO DEVELOP A NUMBER OF NANOCRYSTALLINE MATERIALS USING PULSED REACTIVE ELECTRODES (PRE-EITHERIN THE FORM OF A ROD OR WIRE OR, IN SOME CASES, BRAIDED WIRES) SUBMERGED IN A REACTIVE OR NONREACTIVE DIELECTRIC FLUID. CONTROL OVER THE PROCESSING ...

Zeotrope refrigerant mixtures have been proposed and used for energy saving. Matching the temperature glide of the refrigerant to the temperature change of the heat sink and source, while simultaneously reducing the pressure difference seen by the compressor will result in significantly improved efficiency. A new cycle based on a mixture cascade combined with a rectifier column has recently been i ...

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Commercial aviation offers a low cost platform from which to make extensive humidity measurements, provided the instrumentation can run autonomously and endure the rigorous flight schedules. Advances in state of the art diode laser gas sensing technology make possible compact, fully automated, self-calibrating instrumentation with the sensitivity needed to measure humidity levels throughout the tr ...

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