This review attempts to place the observations of extragalactic planetary nebulae in the context of galactic dynamics. From this point of view only the radial velocities of the PNe is important. We have built a specialised instrument to detect PNe in distant galaxies and measure their radial velocities in one step. This is explained in some detail, along with classical techniques for obtaining ...

the report of two cases of chest and kidney infections reminds of the possibility of distant infections caused by thrombophlebitic complications of cholesteatoma. deep neck infection, mediastinitis, pleural empyema, pulmonary abscesses and hematogenic microabscesses of kidney have been proved by clinical, radiologic and laboratory examinations in two cholesteatoma patients. the clinical course ...

Shared interface allowing several users in co-presence to interact simultaneously on digital data on a single display is an uprising challenge in Human Computer Interaction (HCI). Its development is motivated by the advent of large displays such as wall-screens and tabletops. It affords fluid and natural digital interaction without hindering human communication and collaboration. It enables mut...

We present a UBV CCD photometric study of four open clusters, NGC 7245, King 9, IC 166 and King 13, located between l = 90◦ and 135◦. All are embedded in a rich Galactic field. NGC 7245 and King 9 are close together in the sky and have similar reddenings. The distances and ages are: NGC 7245, 3.8 ± 0.35 kpc and 400 Myr; King 9 (the most distant cluster in this quadrant), 7.9 ± 1.1 kpc and 3.0 G...

Developing diffuse optical tomography methods for neuroimaging of humans is challenging due geometry and light level constraints. Analysis of multi-distant high-density imaging arrays shows the feasibility of imaging up to 20 mm depth within the adult brain. ©2008 Optical Society of America OCIS codes: (170.6960) Tomography; (170.2655) Functional monitoring and imaging; (330.4270) Vision system...