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Table 6 Parameter estimates for B. anthracis ∆Sterne and B. thuringiensis Al Hakam on polypropylene

From: Response surface modeling for hot, humid air decontamination of materials contaminated with Bacillus anthracis ∆Sterne and Bacillus thuringiensis Al Hakam spores

Model term

Parameter estimate

Standard error

t-value

P-value

B. anthracis ∆Sterne

    

Intercept

6.4025

1.8516

3.4578

0.0061

Block (b)

6.4256

2.0000

3.2128

0.0093

x 1

6.9452

1.1711

5.9306

0.0001

x 2

2.2431

1.1711

1.9154

0.0844

x 3

4.3604

1.1711

3.7234

0.0040

x 2 1

−1.0017

2.2678

−0.4417

0.6681

x 2 2

4.8915

2.2678

2.1570

0.0564

x 2 3

−2.3429

2.2678

−1.0331

0.3259

B. thuringiensis Al Hakam

   

Intercept

1.4271

0.1529

9.3320

0.0002

Block (b)

0.7180

0.2202

3.2600

0.0224

x 1

1.7227

0.1529

11.2640

9.6332 × 10−5

x 2

−0.1465

0.1529

−0.9580

0.3822

x 3

0.3641

0.1249

2.9160

0.0332

x 2 1

−0.0792

0.2823

−0.2810

0.7903

x 2 2

0.8467

0.2823

2.9990

0.0301

x 2 3

−0.5264

0.2777

−1.8960

0.1165

  1. Df = 1 for estimates.