A Laboratory Experiment to Demonstrate the Principles of Sedimentation in a Centrifuge: Estimation of Radius and Settling Velocity of Bacteria

Autor/inn/en	Riley, Erin; Felse, P. Arthur
Titel	A Laboratory Experiment to Demonstrate the Principles of Sedimentation in a Centrifuge: Estimation of Radius and Settling Velocity of Bacteria
Quelle	In: Chemical Engineering Education, 51 (2017) 4, S.166-175 (10 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0009-2479
Schlagwörter	Laboratory Experiments; Microbiology; Scientific Concepts; Chemistry; Biotechnology; Hands on Science; Cytology; Data Analysis; Science Education; Teamwork; Coaching (Performance); Notetaking; Critical Thinking; Science Process Skills + Suchen Sie Ihr Suchwort? Laboratory work; Laborarbeit; Mikrobiologie; Chemie; Biotechnologie; Zytologie; Auswertung; Naturwissenschaftliche Bildung; Kritisches Denken
Abstract	Centrifugation is a major unit operation in chemical and biotechnology industries. Here we present a simple, hands-on laboratory experiment to teach the basic principles of centrifugation and to explore the shear effects of centrifugation using bacterial cells as model particles. This experiment provides training in the use of a bench-top centrifuge, handling of bacterial cells, and data analysis. Advanced pedagogical elements in this experiment include team skills coaching and the use of electronic lab notebooks. Several cognitive conflicts presented by centrifugation data fosters critical thinking and stimulates learning by prompting students to look beyond immediately apparent conclusions. (As Provided).
Anmerkungen	Chemical Engineering Education, Chemical Engineering Division of ASEE. P.O. Box 142097, Gainesville, FL 32614. Tel: 352-392-0861; Fax: 352-392-0861; e-mail: cee@che.ufl.edu; Web site: http://journals.fcla.edu/cee/
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01