I will present a method to measure radon concentration using compact discs (CDs) and digital video discs (DVDs). Radon is considered to be the second leading cause for lung cancer after smoking. Due to this long-term retrospective radon exposure estimates are highly desirable for risk estimations. There are many active and passive methods for measuring radon concentration. The best methods for ...

Cortical bone, as the principal structural component of the human body, functions in both a load-bearing and protective capacity. As a material, cortical bone has been the subject of mechanical investigation and characterization for well over a century, and the time dependent nature of this material’s mechanical response to loading is well documented. To model this time-dependent behavior, many...

The difficulty of managing the software in large HEP collaborations appears to becoming progressively worst with each new generation of detector. If one were to extrapolate to the SSC, it will become a major problem. This paper explores the possible causes of the difficulty and makes suggestions on what corrective actions should be taken. Invited paper presented at Computing in High Energy Phys...

Stress distribution in peri-implant bone in an edentulous maxilla following delayed and immediate loading implant and the effect of implant length on the maximum stress were evaluated by using two kinds of finite element analyses. A threaded implant was loaded with a 100 N vertical force, either immediately or delayed, and examined by finite element analysis with a simple contact relation or a ...

We used computer simulations to investigate finite element models [1] of the human skull in EEG source analysis. In the first part, we present a systematic investigation on the accuracy of different ways to account for the layered skull structure. We investigated local models, where each skull location was modeled differently, and global models, where the skull was assumed to be homogeneous, bo...

The aim of this paper is to show that damage mechanisms can account for the response of lamellar bone to nanoindentation tests, with particular regards to the decrease of indentation stiffness with increasing penetration depth and to the loss of contact stiffness during the unloading phase of the test. For this purpose, indentation experiments on bovine cortical bone samples along axial and tra...