Demonstrations to run with Mathematica® or Wolfram CDF Player®

This page contains links to 63 free demonstrations downloadable from the Wolfram Demonstrations Project web site. Demonstrations contain active controls and run in Mathematica or right in your web browser after installation of the free Wolfram CDF Player application. For more information on Mathematica visit the Wolfram Research web site at: http://www.wolfram.com/.

For more information on the models see: Peleg, M. 2006. Advanced quantitative microbiology for food and biosystems: Models for predicting growth and inactivation. CRC Press, Boca Raton FL. (Click to download a 452K PDF file containing contents description.)

Heat Transfer

Estimating the Thermal Properties of Foods from their Moisture Contents
Heat Transfer in a Heat Exchanger
Logarithmic Mean Temperature of a Heat Exchanger
Steady State Heat Transfer Through an Insulated Wall
Stefan-Boltzmann Law

Kinetics: Microbial, Chemical and Biochemical

Growth
Generalized Logistic (Verhulst) Isothermal Microbial Growth on Linear and Logarithmic Coordinates
Modified Logistic Isothermal Microbial Growth Ratio (Linear and Logarithmic) vs. Time
Ratio-Based Modified Logistic Isothermal Microbial Growth on Linear and Logarithmic Coordinates
Uncertainties in Isothermal Microbial Growth [NEW icon]

Microbial Inactivation
Equivalent Isothermal Time at a Reference Temperature as a Function of Time
Idealized Conventional and Pressure-Assisted Thermal Preservation Processes
Log Survival Ratio as a Function of Time
Simulating Temperature versus Time Relationships in the Thermal Preservation of Foods
Survival Curves of Bacilli Spores with an Activation Shoulder
Uncertainties in Isothermal Microbial Inactivation [NEW icon]
Weibullian Inactivation Rate as a Function of Temperature
Weibullian Inactivation Rate as a Function of Time

Mixed Kinetics
Biphasic Exponential Decay And Growth
DeNovo Growth Processes With Competing Mechanisms
Effects of Temperature Fluctuations on Oscillating Biological Systems [NEW icon]
Incipient Growth Processes With Competing Mechanisms
Microbial Population Growth, Mortality and Transitions Between Them
Synergism and Antagonism [NEW icon]

Mass Balance, Heat Balance, Pressure Balance and Flow

Dynamic Water Absorption by Foods
Equivalent Length of a Pipe with Fittings and Valves
Flow from a Tank at Constant Height
Flow Curves of a Herschel-Bulkley Fluid
Food Calories
Force to Overcome Vacuum Pull
Frictional Pressure Drop in a Pipe
Heat Balance in Freezing and Thawing Food
Lubricated and Frictional Squeezing Flow
Mass Balance in a Single Stage Evaporator
Mass Balance of Binary Mixtures
Milk Centrifugation To Cream and Skim
Operation of an Ideal Belt Conveyor
Refrigeration Cycle Coefficient of Performance
Three Component Food Mixtures [NEW icon]

Mathematical Functions and Miscellaneous

2D and 3D Packard-Takens Autocorrelation Plots of Sinusoidal Functions
Arrhenius Equations for Reaction Rate and Viscosity
Arrhenius versus Exponential Model for Chemical Reactions
Bimodal Normal Distribution Mixtures
Characteristic Times in Accumulation and Decay
Expanded Magnitude Estimation Method[NEW icon]
Five Definitions of Strain for Large Deformations
Line Jaggedness Visualization with the Mandelbrot-Weierstrass Function
Mechanical Sensitivity of Soft Testing Machines
Noise Retrieval from Averaged Sequences
Relaxation of a Maxwell Element

Particulates

Bimodal Size Distributions in Grinding and Attrition
Equilibrium Water Activity of Binary Dry Mixtures
Principal Stresses in Compacted Cohesive Powders
Surface Area Increase by Size Reduction
The Ratio of Surface Area to Volume for a Cube and a Sphere
Volume and Mass of a Spoonful of Powder

Risk Assessment

Additive and Multiplicative Risks
Expanded Fermi Solution for Estimating a Complaint's Probability
Expanded Fermi Solution for Risk Assessment
Expanded Fermi Solutions in Pathogens' Dose-Response Curves
Expanded Fermi Solution to Retrodict the Initial from the Final Number in a Stochastic Process
Failure Probabilities from Quality Control Charts
Pathogen Dose-Response Curves with the Beta Poisson and Lognormal Models
Simulating Microbial Count Records with an Expanded Fermi Solution Model

[Return to ] Prof. Micha Peleg

Links to four additional Demonstrations are available here --> [Return to ] Mark D. Normand

[Return to ] UMass Department of Food Science

[Return to ] University of Massachusetts at Amherst

Content last updated: December 19, 2011