15 years ago—February 1984

Heinz Otto Schild - 18 May 1906-15 June 1984.

Heinz Otto Schild, 18 May 1906 - 15 June 1984

15 Years of Rolland

The paper presents 15 years of research conducted on the Bremen Autonomous Wheelchair “Rolland”. Rolland is a mobility assistant for the handicapped and the elderly. The paper presents the different versions of Rolland that were built over the years, as well as the special input devices that are used with Rolland. Contributions were made to the state of the art in the areas of self-localization...

Five hundred years of the nephrotic syndrome: 1484-1984

The nephrotic syndrome has emerged over several centuries as the consequence of continued profuse proteinuria, arising in turn from a variety of lesions affecting the glomerulus which impair glomerular ability to retain plasma proteins, in particular, albumin. As a syndrome, it has its own complications and requires its own management irrespective of the underlying lesions. Dissection of these ...

Earth: 15 Million Years Ago

In Einstein’s general relativity theory the metric component gxx in the direction of motion (x-direction) of the sun deviates from unity due to a tensor potential caused by the black hole existing around the center of the galaxy. Because the solar system is orbiting around the galactic center at 200 km/s, the theory shows that the Newtonian gravitational potential due to the sun is not quite ra...