a+ tas Ry(ke? - ke*2")
with @ solutdon
=, [*ofAy-Ay) tye o*). « (8)
as‘a [sAt one]
svnen ax Ou ety nt te veto
with a solution
.
Ds aise [= » oAyl2t-ty) al
(9)
t,
“hh ~A,e~,(t-t) -A3a)
+ Bota [aye rh _ (2a,-ApJe
having chosen D =D, D = Oat t = ty.
(For long t and small d the constant t, may be set = 0)
Substituting the values shosen into equatden (8), there reeults with
t = 27 days as in reforence (1) and t, = 0.15 day,
39 = Bf 0.0205 (0.0874) - 9.37 x 107 (9.0 x 10))
910,0855
R, = 166 pefday per d/nt™ per 10% rtssione,
or y(t) = 186(0.0169) = ek r41lay initdallye
While
Delo ,
#31 x 10>
(0401) + 06668 (0.347) = 209 + 6 = rep.
220
in 27 days
0203
if t, 0 and t, =O, there results
& @ 261(1 # 0-0) - 18.4(0 - 0 + 0.383) = 261 + 7 & rem to om.
Formulas (7) and (&) may thus be simplified by neglecting the smaller
exponential terns, tut letting t = co
6
results in about 20 per cent too
Pao. =
oy
a mem in
DO’ ARCHIVES