Assessment of bovine uterine artery hemodynamics using Doppler ultrasound and a computer model

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1987
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Waite, Leroy
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Donald F. Young
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Chemical and Biological Engineering

The function of the Department of Chemical and Biological Engineering has been to prepare students for the study and application of chemistry in industry. This focus has included preparation for employment in various industries as well as the development, design, and operation of equipment and processes within industry.Through the CBE Department, Iowa State University is nationally recognized for its initiatives in bioinformatics, biomaterials, bioproducts, metabolic/tissue engineering, multiphase computational fluid dynamics, advanced polymeric materials and nanostructured materials.

History
The Department of Chemical Engineering was founded in 1913 under the Department of Physics and Illuminating Engineering. From 1915 to 1931 it was jointly administered by the Divisions of Industrial Science and Engineering, and from 1931 onward it has been under the Division/College of Engineering. In 1928 it merged with Mining Engineering, and from 1973–1979 it merged with Nuclear Engineering. It became Chemical and Biological Engineering in 2005.

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1913 - present

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  • Department of Chemical Engineering (1913–1928)
  • Department of Chemical and Mining Engineering (1928–1957)
  • Department of Chemical Engineering (1957–1973, 1979–2005)
    • Department of Chemical and Biological Engineering (2005–present)

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Abstract

Early diagnosis of pregnancy is an important component of efficient management in the cattle breeding industry. Using current techniques there is no practical test which reliably detects pregnancy at less than 30 days after conception. This project was initiated with a general objective to investigate the feasibility of using Doppler ultrasound for early pregnancy diagnosis in cattle (between 15 and 30 days after conception);A suitable probe was designed and developed for collecting Doppler blood velocity waveforms from the bovine uterine artery using rectal palpation. A portable, microcomputer-based, velocity waveform analyzer was constructed which allows for collection and analysis of blood velocity waveforms in the field. To obtain some basic hemodynamic data related to uterine artery blood flow, pulsed Doppler, electromagnetic flowmeter, and continuous wave Doppler data were collected;A computer model of flow in the uterine artery was developed to study, theoretically, the effect of changes in various parameters on the blood velocity waveform;With regard to pregnancy diagnosis, the following points are made: (1) It is feasible to obtain velocity waveforms through rectal palpation using the finger probe which was designed for this study. (2) The data can be processed using the portable, microcomputer-based, velocity waveform analyzer. (3) It may be possible to diagnose pregnancy in cows using Doppler blood velocity waveforms, but due to the fact that several factors, in addition to mean flow, appear to affect the shape of the waveforms, further work is needed to establish suitable criteria.

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Thu Jan 01 00:00:00 UTC 1987