The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Importance The protective effects of physical activity (PA) against Parkinson disease (PD) development have been suggested; however, the association of PA with mortality in PD has rarely been investigated.
Objective To evaluate the association between PA and mortality in individuals with PD and determine how the amount and maintenance of PA are associated with mortality.
Design, Setting, and...
For close to twenty years now, there have been substantial efforts to extend Geographic Information Systems with functionality to carry out spatial analysis in general, and spatial statistical analysis in particular. Early work tended to emphasize objectives for the integration of GIS and spatial analysis, outline required functionality and describe overall frameworks, as exemplified in, among others,...
In a weak grid condition, the precise grid impedance estimation is essential to guaranty the high performance current control and power transfer for a grid-connected inverter. This paper proposes a precise estimation method for grid impedance by P-Q variations employing a decoupled injection of reference currents. The operation principle of grid impedance estimation is fully presented, and the negative...
This paper proposes a novel soft-switched auxiliary resonant circuit to provide a Zero-Voltage-Transition turn-on switching for a conventional PWM boost converter in a PFC application. The proposed auxiliary circuit enables a main switch of the boost converter to turn on under a zero voltage switching conduction and simultaneously achieves both soft switched turn-on and turn-off. Moreover, for the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.