A substantial increase in stratospheric aerosol was recorded between May and October 1998 between 55 ø and 70øN. This phenomenon was recorded in the absence of reported volcanic eruptions with stratospheric impact potential. The POAM III and SAGE II instruments made numerous measurements of layers of enhanced aerosol extinction substantially higher than… (More)
This paper presents the analytical steps for decoupling the natural dynamics representing the relative motion of two spacecraft flying in close orbits, both without and with the inclusion of the J2 perturbation. Linear mathematical models with constant coefficients are available in literature for representing such dynamics. In both cases two modes can be… (More)
Sounds obtained in normal man by electric stimulation of masseter muscle have been analyzed both in the domain of time and frequency. Data thus obtained have been compared with those obtained by the same technique in vastus lateralis and soleus muscles. Results suggest the feasibility of sound analysis in dentistry diagnosis.