Time-dependent fluorescence spectral shift and unusual slow decay of exciplex in poly(N-vinylcarbazole) films

1989 ◽  
Vol 93 (14) ◽  
pp. 5351-5353 ◽  
Author(s):  
Hisashi Sakai ◽  
Akira Itaya ◽  
Hiroshi Masuhara
Keyword(s):  
Spectral Shift ◽  
Time Dependent ◽  
Slow Decay

scholarly journals Modeling Growth, Containment and Decay of the COVID-19 Epidemic in Italy

2020 ◽  
Vol 8 ◽  
Author(s):  
Francesco Capuano
Keyword(s):  
Exponential Growth ◽  
Compartment Model ◽  
Growth Behavior ◽  
Time Dependent ◽  
Model Parameters ◽  
Susceptible Population ◽  
Dependent Rate ◽  
Slow Decay ◽  
Cumulative Curve ◽  
Modeling Growth

A careful inspection of the cumulative curve of confirmed COVID-19 infections in Italy and in other hard-hit countries reveals three distinct phases: i) an initial exponential growth (unconstrained phase), ii) an algebraic, power-law growth (containment phase), and iii) a relatively slow decay. We propose a parsimonious compartment model based on a time-dependent rate of depletion of the susceptible population that captures all such phases for a plausible range of model parameters. The results suggest an intimate interplay between the growth behavior, the timing and implementation of containment strategies, and the subsequent saturation of the outbreak.

The "spectral shift" phenomenon of chloroquine

1966 ◽  
Vol 93 (1) ◽  
pp. 123-128 ◽  
Author(s):  
W. M. Sams
Keyword(s):  
Spectral Shift
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