Key Engineering Materials Vols. 609-610

Abstract: Head tracking technique plays an important role in the modern war. Because it is directly related to target capture rate. To adapt to rapid attitude position of the helmet, a novel real-time head tracking technology based on Micro-Electro-Mechanical Systems inertial navigation system (MEMS-INS) and Charge Coupled Device (CCD) is put forward. This method not only considers the spatial limitations of the helmet, but also takes into account the complementarity between inertial method and optical method. Firstly, the fundamental principle of head attitude measurement based on MEMS-INS/CCD is introduced. The state space model of the helmet attitude measurement is then built. In the end, feasibility of this method is validated by simulation. Simulation results show that head misalignment angle error can be estimated and reaches anticipated precision2 in 10 seconds. The helmet real-time tracking can be completed.

Abstract: In recent years, environmental application of nanotechnologies has attracted considerable interests. Nanometer materials have novel physical, chemical and biological properties, which have gain wider application for pollution prevention, detection, monitoring and remediation of pollutants, such as heavy metals, inorganic and organic pollutants. This review summarizes environmental cleanup and provide a background in both laboratory and pilot study. Furthermore, this overview stated the current practice in contaminated soil and groundwater, and future directions for nanoremediation, especially for nanoscale zero-valent iron. The future of nanophytoremediation was also discussed in details.