Decay estimates for time-fractional and other non-local in time subdiffusion equations in \\(\\mathbb {R}^d\\) We prove optimal estimates for the decay in time of solutions to a rather general class of non-local in time subdiffusion equations in \\(\\mathbb {R}^d\\)... J ...
Radioactive Decay Law formula is: N = N0e-(0.693t/T1/2) Where: N: Activity at time 0 N0: Initial activity t: decay time T1/2: half time of the radioactive material The calculation assumes that 1 year = 365 days, and 1 month = 30 days.Isotope...
Regardless, whatever model is selected to study or illustrated the required changes across time, the new value of the variable b is called the "growth factor." Using the exponential growth and exponential decay formulas will be useful when solving problems like the ones featured below: Example 1...
Time evolution of decay spectrum in [formula omitted] We consider the decay K0(K0)→π+π−e+ LM Sehgal,JV Leusen - 《Physics Letters B》 被引量: 10发表: 2000年 Time evolution of decay spectrum in K0,K0→π+π−e+e− We consider the decay K0 (K0)→π+π−e+e− of a...
modified Arrhenius formulaWe study the problem of the time decay of magnetic states in type-II superconductors by starting from the general expression of the Arrhenius formula as derived from classical stochastic mechanics. By appropriately writing the potential energy for a fluxon in the presence of...
The formula for the exponential growth of a variable x at the growth rate r, as time t goes on in discrete intervals (that is, at integer times 0, 1, 2, 3, …), is Xt=X0 (1+r)t where x0 is the value of x at time 0. This formula is transparent when the exponents are ...
What is the formula for calculating half-life? Half-life is the time it takes an initial amount of radioactive material to be reduced to its half. The half-life formula is given as: T_{1/2}=\frac {0.693}{\lambda} where \lambda is the decay constant ...
Basing on this matrix we represent in the explicit formula the solution of the Cauchy problem to this system of equations. Next, applying the method of Sobolev spaces, we proved the Lp-Lq time decay estimate to the solution of the Cauchy problem. (© 2009 Wiley-VCH Verlag GmbH & Co...
awhere a relates to the time constant and xm can take two possible values according to the output of comparator Cl. The input to the positive polarity of the comparator Cl is SDIk, 那里a与时间常数关连,并且xm可能根据比较器分类产品采取二可能的价值。 输入到比较器分类的正面极性是SDIk,[transla...
摘要: The amplitude of the decay η′→π<sup>+</sup>π<sup>−</sup>γ is derived in the soft limit of the current scheme of η-η′ mixing. The results are compared with experimental values of the phenomenological contribution additive to the ρ-meson contribution.DOI: 10.1134/1.855658...