Imperfections of Laboratory Material

Community Imperfections

Laboratory investigation of the frictional behavior of granular volcanic material

We report on detailed laboratory experiments designed to illustrate the frictional behavior of granular volcanic debris. The materials include pyroclastic flow debris from Soufrière Hills Volcano, Montserrat, and from Stromboli Volcano, Italy, and lahar deposits from Mount St. Helens. Experiments were conducted in a servo-controlled, double-direct shear apparatus under conditions of displacemen...

Imperfections in Random Tournaments

Preferences for nesting material as environmental enrichment for laboratory mice.

Behavioural and psychological needs of laboratory animals generally cannot adequately be met in standard laboratory cages. Environmental enrichment, which provides a more structured environment can enhance the well-being of laboratory animals. They may perform more of their species-specific behaviour and may control their environment in a better way. An easily applicable form of enrichment for ...

Rendering Imperfections: Dust, Scratches, Aging,.

In order to incrase the realism of an image or a scene in a computer-graphics application, so-called “imperfections” are often used during rendering. These are techniques which add details like dirt, scratches, dust or aging effects to the models and textures. Realism is improved through imperfections since computer generated models are usually too “perfect” to be accepted as “realistic” by hum...