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  • Understanding Air Flow Calibrations for Personal Monitoring Pumps
    the collection medium with a consistent flow rate such that the total volume of air drawn can be determined with optimum accuracy. The overall accuracy of the sample is a combination of two components. These components are the accuracy of the laboratory analysis of the material collected on the sampling
  • Bulk Specialty Gas Systems for Ammonia: Gas Phase Delivery vs. Liquid Phase Delivery
    Three different Bulk Specialty Gas delivery Systems (BSGS) were designed and tested up to flow rates of 1000 slpm. Conventional gas delivery, conventional liquid delivery and a novel liquid delivery system featuring Total Vaporization (TV) were compared in terms of product consistency
  • Measurement of Continuous Surface Shear Stress Vector Distributions (.pdf)
    difference used to drive this flow was controlled by two pressure regulators in series, and its value was indicated by a calibrated gauge. It can be shown that the pressure difference (total - static) used to drive the jet is proportional to the shear stress.
  • Field Calibrations
    This system consists of a transfer standard turbine flowmeter, a metering run, and electronics that is mounted on a hand truck for mobility. The electronics provide instantaneous indication of the flowrate and flowing temperature, a total flow indicator, as well as an accumulative test total
  • Medical Device Link .
    . Further-more, continuous measurement of flow or differential pressure over time would allow the total transported volume of gas or liquid to be calculated. Technological progress in microsensor technology now makes it possible to produce components that are smaller, cheaper and suitable for low-power
  • MICRO: Reality Check
    have not materialized. Although achieving an all-dry-clean process flow would be ideal, nonplasma dry cleaning accounts for less than 1% of the total market. These predictions have ignored several fundamental facts behind the continued success of batch and single-wafer wet cleans. One critical
  • Novel Manufacturing Technique Produces Parts Lighter and Stronger than Aluminum
    "thixotropy, " the property of certain fluids to exhibit changes in viscosity depending on sheer stresses. MAG produces net or near-net parts. ), that provide MAG say the technique combines plastic injection molding and die casting (a process in which liquid material is poured into a mold with a shaped

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