Browsing by Author "McFarland, Andrew R."

Now showing items 1-15 of 15

    • Ambient aerosol sampling inlet for flow rates of 100 and 400 l/min 
      Baehl, Michael Matthew (2009-05-15)
      New bioaerosol sampling inlets were designed and tested that have nominal exhaust flow rates of 100 L/min to 400 L/min, and which have internal fractionators and screens to scalp large, unwanted particles and debris from ...
    • Anisokinetic shrouded aerosol sampling probe 
      McFarland, Andrew R. (United States. Patent and Trademark Office; Texas A&M University. Libraries, 1990-07-24)
      This invention relates to an aerosol sampling probe and method used for the collection of samples from moving fluid streams. A shroud surrounds the probe which enables the collection of more representative concentrations ...
    • Application of computational fluid dynamics to aerosol sampling and concentration 
      Hu, Shishan (2009-05-15)
      An understanding of gas-liquid two-phase interactions, aerosol particle deposition, and heat transfer is needed. Computational Fluid Dynamics (CFD) is becoming a powerful tool to predict aerosol behavior for related design ...
    • Changes occuring in yeasted wheat flour doughs during cryogenic freezing and frozen storage 
      Nash, Jeffrey Clinton (Texas A&M University. Libraries, 1987)
      During this study, an apparatus was designed and constructed to allow for cryogenic freezing of 10 gram loaves of yeasted wheat flour dough. Dough loaves were frozen by direct contact freezing with boiling Freon compounds. ...
    • Characterization of small aerosol sampling cyclones 
      DeOtte, Robert Eugene (Texas A&M University. Libraries, 1986)
      A laser Doppler velocimeter was used to measure three components of velocity in the body of an 88.9 mm diameter, multiport, reverse flow sampling cyclone with a flat bottom. This velocity data was then nondimensionalized ...
    • The continuum regime charging of submicrometer particles by bipolar air ions : theory and experiment 
      Gauntt, Randall Owen (Texas A&M University. Libraries, 1982)
      A study was undertaken to characterize experimentally the continuum regime charging of aerosols by bipolar gaseous ions and to evaluate theoretical models for the charging process. Experiments were conducted on monodisperse ...
    • Design of bioaerosol sampling inlets 
      Nene, Rohit Ravindra (Texas A&M University, 2007-09-17)
      An experimental investigation involving the design, fabrication, and testing of an ambient sampling inlet and two additional Stokes-scaled inlets is presented here. Testing of each inlet was conducted at wind speeds of ...
    • Design of high efficiency blowers for future aerosol applications 
      Chadha, Raman (Texas A&M University, 2007-04-25)
      High efficiency air blowers to meet future portable aerosol sampling applications were designed, fabricated, and evaluated. A Centrifugal blower was designed to achieve a flow rate of 100 L/min (1.67 x 10^-3 m^3/s) and a ...
    • Experimental and numerical studies of aerosol penetration through screens 
      Han, Tae Won (2009-05-15)
      This research reports the results of experimental and numerical studies performed to characterize aerosol deposition on four different types of commercially available screens (electroformed-wire, woven-wire, welded-wire, ...
    • The inline virtual impactor 
      Seshadri, Satyanarayanan (2009-05-15)
      A circumferential slot In-line Virtual Impactor (IVI) has been designed using Computational Fluid Dynamics (CFD) simulation tools and experimentally characterized using monodispersed liquid aerosols to validate simulation ...
    • Measurement of the effect of indoor atmospheric trace gas on the polonium-218 ion mobility spectrum by alpha-track detection 
      Yoon, Suk-Chul (Texas A&M University. Libraries, 1990)
      A number of investigators have reported formation of radiolytic ultrafine particles produced by the interaction of ionizing radiation with atmospheric trace gases. Previous studies have suggested that a very high localized ...
    • Particle lift force and particle behavior in suspension flows 
      Fan, Bijian (Texas A&M University. Libraries, 1994)
      In this study, particle lift force and its influence on particle behavior are considered in suspension flows. Saffman force, a particle lift force derived in parallel laminar shear flow, is extended to a general particle ...
    • Radon (Rn-222) and thoron (Rn-220) emanation fractions from three separate formations of oil field pipe scale 
      Fruchtnicht, Erich Harold (Texas A&M University, 2004-11-15)
      Over the course of normal oil well operations, pipes used downhole in the oil and petroleum industry tend to accumulate a mineral deposit on their interior, which restricts the flow of oil. This deposit, termed scale, ...
    • Transpirated wall aerosol collection system and method 
      McFarland, Andrew R. (United States. Patent and Trademark Office; Texas A&M University. Libraries, 2001-04-17)
      A transpirated wall aerosol collection system includes a collector operable to receive a gas flow containing particulate matter. The system also includes a porous wall having a first surface and a second surface. The porous ...
    • Two linear slot nozzle virtual impactors for concentration of bioaerosols 
      Haglund, John Steven (Texas A&M University, 2005-02-17)
      Two experimental configurations of linear slot nozzle virtual impactors were constructed and experimentally investigated for use as bioaerosol concentrators. In one configuration, the Linear Slot Virtual Impactor (LSVI), ...