VERSION 5.00
Begin VB.Form Form1 
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         Width           =   252
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         TabIndex        =   55
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   Begin VB.Line Line6 
      BorderWidth     =   2
      X1              =   4200
      X2              =   4320
      Y1              =   720
      Y2              =   840
   End
   Begin VB.Line Line5 
      BorderWidth     =   2
      X1              =   4200
      X2              =   4320
      Y1              =   960
      Y2              =   840
   End
   Begin VB.Line Line4 
      BorderWidth     =   2
      X1              =   3240
      X2              =   4320
      Y1              =   840
      Y2              =   840
   End
   Begin VB.Line Line3 
      BorderWidth     =   2
      X1              =   2160
      X2              =   2280
      Y1              =   960
      Y2              =   840
   End
   Begin VB.Line Line2 
      BorderWidth     =   2
      X1              =   2160
      X2              =   2280
      Y1              =   720
      Y2              =   840
   End
   Begin VB.Line Line1 
      BorderWidth     =   2
      X1              =   2280
      X2              =   1320
      Y1              =   840
      Y2              =   840
   End
   Begin VB.Label Label7 
      Alignment       =   2  'Center
      BackColor       =   &H80000009&
      BackStyle       =   0  'Transparent
      Caption         =   "Isotope Abundance (atom %)"
      Height          =   612
      Left            =   720
      TabIndex        =   6
      Top             =   4680
      Width           =   852
   End
   Begin VB.Label Label6 
      Alignment       =   2  'Center
      BackColor       =   &H80000009&
      BackStyle       =   0  'Transparent
      Caption         =   "Time (h)"
      Height          =   252
      Left            =   2280
      TabIndex        =   5
      Top             =   6120
      Width           =   972
   End
   Begin VB.Label Label5 
      Alignment       =   1  'Right Justify
      BackColor       =   &H80000009&
      BackStyle       =   0  'Transparent
      Caption         =   "100"
      Height          =   252
      Left            =   1320
      TabIndex        =   4
      Top             =   3840
      Width           =   252
   End
   Begin VB.Label Label4 
      BackColor       =   &H80000009&
      BackStyle       =   0  'Transparent
      Caption         =   "1.0"
      Height          =   252
      Left            =   3600
      TabIndex        =   3
      Top             =   6000
      Width           =   252
   End
   Begin VB.Label Label3 
      Alignment       =   1  'Right Justify
      BackColor       =   &H80000009&
      BackStyle       =   0  'Transparent
      Caption         =   "0"
      Height          =   252
      Left            =   1440
      TabIndex        =   2
      Top             =   5880
      Width           =   132
   End
   Begin VB.Label Label2 
      BackColor       =   &H80000009&
      BackStyle       =   0  'Transparent
      Caption         =   "0"
      Height          =   252
      Left            =   1680
      TabIndex        =   1
      Top             =   6000
      Width           =   132
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
Picture1.Refresh
Picture2.Refresh
Mx = 1
My1 = 100
My2 = 1000
A1 = Text1.Text
B1 = Text2.Text
B2 = Text3.Text
C1 = Text4.Text
C2 = Text5.Text
D1 = Text6.Text
D2 = Text7.Text
B3 = Text8.Text
C3 = Text9.Text
D3 = Text10.Text
B4 = Text11.Text
C4 = Text12.Text
D4 = Text13.Text
B5 = Text14.Text
B6 = Text15.Text
C5 = Text16.Text
C6 = Text17.Text
D5 = Text18.Text
D6 = Text19.Text
B7 = Text20.Text
C7 = Text21.Text
D7 = Text22.Text
z = Mx / 2000
For t = 0 To Mx Step z
B1 = (B1 * B2 + A1 * z * B3) / (B2 + z * B3)
B2 = B2 + z * B3
B1 = (B1 * B2 - B1 * z * B4) / (B2 - z * B4)
B2 = B2 - z * B4
B5 = (B5 * B6 + B1 * z * B7) / (B6 + z * B7)
B6 = B6 + z * B7
C1 = (C1 * C2 + B1 * z * C3) / (C2 + z * C3)
C2 = C2 + z * C3
C1 = (C1 * C2 - C1 * z * C4) / (C2 - z * C4)
C2 = C2 - z * C4
C5 = (C5 * C6 + C1 * z * C7) / (C6 + z * C7)
C6 = C6 + z * C7
D1 = (D1 * D2 + C1 * z * D3) / (D2 + z * D3)
D2 = D2 + z * D3
D1 = (D1 * D2 - D1 * z * D4) / (D2 - z * D4)
D2 = D2 - z * D4
D5 = (D5 * D6 + D1 * z * D7) / (D6 + z * D7)
D6 = D6 + z * D7
X = t
Y = A1
X = (X * 2000 / Mx)
Y = 2000 - (Y * 2000 / My1)
Picture1.PSet (X, Y), QBColor(0)
Y = ((B1 * B2) + (B5 * B6)) / (B2 + B6)
Y = 2000 - (Y * 2000 / My1)
Picture1.PSet (X, Y), QBColor(10)
Y = ((C1 * C2) + (C5 * C6)) / (C2 + C6)
Y = 2000 - (Y * 2000 / My1)
Picture1.PSet (X, Y), QBColor(9)
Y = ((D1 * D2) + (D5 * D6)) / (D2 + D6)
Y = 2000 - (Y * 2000 / My1)
Picture1.PSet (X, Y), QBColor(12)
Y = B2 + B6
Y = 2000 - (Y * 2000 / My2)
Picture2.PSet (X, Y), QBColor(10)
Y = C2 + C6
Y = 2000 - (Y * 2000 / My2)
Picture2.PSet (X, Y), QBColor(9)
Y = D2 + D6
Y = 2000 - (Y * 2000 / My2)
Picture2.PSet (X, Y), QBColor(12)
Next t
End Sub

Private Sub Command2_Click()
Unload Form1
End Sub