English At the Heinrich-Heine-University, Düsseldorf, a hypermedia learning environment (HML) called "Physics for Medical Students" has been developed and evaluated (Theyßen 2002, Theyßen & Hüther 2003). For already several terms now it has been an integral part of physics education of medical students at three German universities. Students do not participate in the traditional lab work session...

Drought stress triggers mature leaf senescence, which supports plant survival and remobilization of nutrients; yet leaf senescence also critically decreases post-drought crop yield. Drought generally results in carbon/nitrogen imbalance, which is reflected in the increased carbon:nitrogen (C:N) ratio in mature leaves, and which has been shown to be involved in inducing leaf senescence under nor...

rectangular waveguide (wr) is one of the earliest types of transmission lines. rectangular waveguide can be produced by hot extrusion process. in this paper, the hot extrusion process of cuzn5 rectangular waveguide was investigated by finite element method (fem). in addition, genetic algorithm method (ga) was used to optimize the die geometry and process conditions to achieve the lowest magnitu...

there are many parameters that affect the sheet hydroforming process such as fluid pressure, material properties, interfacial friction between blank and tool surfaces, etc. in this paper, a fem-based taguchi method is used to determine the effects of forming parameters on the quality of part formability in the process of hydrodynamic deep drawing assisted by radial pressure. four important form...

The hydrostatic extrusion is a new method of extrusion process. The most important advantage of this method is reduction of friction and close tolerance for the coating thickness. In this study, the hydrostatic extrusion simulation of bimetallic wires has performed using of finite element method. In the following the advantages of hydrostatic extrusion compared to the direct extrusion are prese...

Digital Rights Management (DRM) ist die Verwaltung von Rechten an geistigem Eigentum mit digitalen Mitteln; insbesondere für elektronisch gespeicherte Inhalte und Dienstleistungen. DRM ist ein komplexes und kontrovers diskutiertes Thema das besondere technische wie auch rechtliche Aspekte aufweist. Die rechtliche Flankierung von wesentlichen Aspekten des Digital Rights Management ist mit Inkraf...

We report here that all 25 isolates of Tomato yellow leaf curl China virus (TYLCCNV) collected from tobacco, tomato, or Siegesbeckia orientalis plants in different regions of Yunnan Province, China, were associated with DNAbeta molecules. To investigate the biological role of DNAbeta, full-length infectious clones of viral DNA and DNAbeta of TYLCCNV isolate Y10 (TYLCCNV-Y10) were agroinoculated...

Fortbildung hat in der Medizin einen hohen Stellenwert. Mit dem Inkrafttreten des Gesetzes zur Modernisierung der gesetzlichen Krankenversicherung vom Nov. 2003 sind regelmäßige Fortbildungen für alle Ärzte mit kassenärztlicher Zulassung ab 2004 verpflichtend. Im Dezember 2003 fand in der Medizinischen Hochschule Hannover (MHH) erstmals eine neuroradiologische Fortbildungsmaßnahme statt, in der...