---
res:
  bibo_abstract:
  - Currently there are pulse based ultrasonic sensor systems used to measure flow,
    liquid level, concentration or in process monitoring. In several processes the
    investigated media are a mixture of liquid and solid ingredients (emulsions, suspensions).
    The use of ultrasonic sensor systems will be very complicated if gas bubbles appear
    at the measurement place caused by chemical reactions, high temperature or fast
    flow that means by typical process conditions. Firstly, the appearance of gas
    bubbles falsifies the measured absorption. Secondly, the measured velocity is
    influenced by gas bubbles. In figure 1 is visible that a volume fraction of 0.1
    ppm of undissolved air decreases the sound velocity by 1.4 m s-1@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Michael
      foaf_name: Gulsch, Michael
      foaf_surname: Gulsch
  - foaf_Person:
      foaf_givenName: Bernd
      foaf_name: Henning, Bernd
      foaf_surname: Henning
      foaf_workInfoHomepage: http://www.librecat.org/personId=213
  dct_date: 2005^xs_gYear
  dct_language: eng
  dct_title: Bubble detection and gas volume measurement in bubble loaded liquids
    with pulse driven measurement devices@
...