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Angela R. Bielefeldt
Researcher at University of Colorado Boulder
Publications - 180
Citations - 2629
Angela R. Bielefeldt is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Engineering education & Social responsibility. The author has an hindex of 27, co-authored 180 publications receiving 2335 citations. Previous affiliations of Angela R. Bielefeldt include University of Washington & University of Colorado Denver.
Papers
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Journal ArticleDOI
Biogenic sulfuric acid attack on different types of commercially produced concrete sewer pipes
Ma.Guadalupe D. Gutierrez-Padilla,Angela R. Bielefeldt,Serguei Ovtchinnikov,Mark Hernandez,JoAnn Silverstein +4 more
TL;DR: In this article, the degradation of low and high quality concrete under conditions simulating sewer pipes with and without bacteria was compared, and the results showed that the (low-w/c) concrete was more resistant to the biodegradation even though a lower pH was attained for its bioactive systems.
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Bacterial treatment effectiveness of point-of-use ceramic water filters
TL;DR: These POU filters were found to be effective, but showed loss of effectiveness with time and indicated a release of microbes into subsequent volumes of water passed through the system.
Journal Article
Measuring the value added from service learning in project-based engineering education
TL;DR: In this paper, the authors highlight possible methods to determinethe added value of service-based learning especially when coupled to project-based engineering education and further examine the state of this field.
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Modeling competitive inhibition effects during biodegradation of BTEX mixtures
TL;DR: In this article, a quantitative evaluation of the biodegradation rates of mixtures of volatile aromatic compounds (benzene, toluene, ethylbenzenes, xylenes [BTEX]) was conducted.
Journal Article
A Framework for the Development of Social Responsibility in Engineers
TL;DR: The Professional Social Responsibility Development Model as mentioned in this paper is a framework to understand the development of personal and professional social responsibility in engineers, which is rooted in the Ethic of Care philosophy, and uses threerealms to describe the development.