Instructor's Page

You may wish to delete this page in the web pages assigned to students.

Note the PARAM lines in the HTML source page for the page with the applet:

APPLET CODE="fermt.class" 
width=760 height=520 name = "plot"
PARAM name = "runstr" value = "10"
PARAM name = "sugarstr" value = "0.3"
PARAM name = "steepstr" value = "0.8"
PARAM name = "soystr" value = "2.1"
PARAM name = "oilstr" value = "0.009"
PARAM name = "sterilstr" value = "47.6"
PARAM name = "airstr" value = "0.3"
PARAM name = "vitstr" value = "0.02"
PARAM name = "minstr" value = "0.15"
PARAM name = "mustr" value = "1.0"
/APPLET

It is trivial to substitute a different data set. In fact, it would take only a few minutes to provide each student with unique data to insure independent work.

Explanations:

"runstr" value = "10" This causes the runs to stop after ten.

The ingredient "str" PARAMs are coefficients in the Monod equation or inhibition coeff.

"sterilstr" value = "47.6" Required time for sterilization. It is increased for the solids in soybean meal and in minerals, e.g., CaCO3.

"mustr" value = "1.0" Maximum specific growth rate coefficient. It is scaled within the program. This is an easy place for the instructor to make a tiny change that makes a significant difference in the results.

Small amounts of sugar are destroyed by heat starting at time zero. The byproduct of this destruction is highly detrimental to the growth rate. This is a way to have the results affected by xs sugar and xs sterilization.

Soymeal is better than corn steep for providing nitrogen, but it add a few minutes to the minimum sterilization time.

Soymeal and corn steep are interchangeable for N but in different amounts.

Soymeal and corn steep provide tiny amounts of trace ingredients, thus adding zero trace ingredients does not completely cripple the fermentation.
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