background: this study is the first research investigating the possible effect of pulsed power signals on the characteristics of cortical bone by comparing the mechanical properties of this type of bone pre and post expose to pulsed power. methods: a positive buck-boost converter was applied to generate adjustable high voltage, high frequency pulses (up to 500 v and 10 khz). the functional beha...

The sources of human exposure to low-frequency noise and its effects are reviewed. Low-frequency noise is common as background noise in urban environments, and as an emission from many artificial sources: road vehicles, aircraft, industrial machinery, artillery and mining explosions, and air movement machinery including wind turbines, compressors, and ventilation or air-conditioning units. The ...

Low frequency noise (LFN) is common as background noise in urban environments and as an emission from many artificial sources: road vehicles, aircraft, industrial machinery, artillery and mining explosions, and air movement machinery including wind turbines, compressors, and indoor ventilation and air conditioning units (Tempest, 1976; Leventhall, 1988 from St Pierre and Maguire [1]). LFN may a...

We summarize the results of BeppoSAX ToO observation of blazars that were known to be in a high state from observations carried out in the optical or X-ray or TeV bands. In some of the sources observed, two spectral components were detected, which are interpreted as synchrotron and inverse Compton emission, respectively. Fast variability was detected in three sources (ON231, BLLac and S5 0716+7...

According to Doppler shift of moving acoustic source signal, a method is proposed for identification of noise sources on underwater moving target with single hydrophone. The weak Doppler shift curves due to target moving are obtained by utilizing high accuracy ST-Chirp-z algorithm. Considering the sources with small frequency interval, high frequency resolution ST-ESPRIT algorithm is used to ex...

Energy harvesting technology is attracting huge attention and holds a promising future for generating electrical power. This process offers various environmentally friendly al‐ ternative energy sources. Especially, radio frequency (RF) energy has interesting key at‐ tributes that make it very attractive for low-power consumer electronics and wireless sensor networks (WSNs). Ambient RF energy co...

Introduction. The professional education can be a very stressful experience. The high level of stress often leads to disruptions in physiological and psychological health. Although a moderate degree of stress can promote students’ creativity and achievement, the intense pressures and relentless demands of medical education may destroy personal relationship and ultimately, affect patient care. ...

Infrared frequency-tunable coherent thermal sources Hao Wang, Yue Yang, and Liping Wang School for Engineering of Matter, Transport & Energy, Arizona State University, Tempe, Arizona, 85287, USA * Equal contribution. † Corresponding author. Email: [email protected], Phone: 1-404-727-8615 Submitted on October 24, 2014; Revised on January 18, 2015 Abstract In this work, we numerically demonstra...

Intraday variability (IDV) of compact extragalactic radio sources is a complex phenomenon and shows a wavelength dependent mixture of refractive interstellar scintillation (RISS) (dominant at long cm-wavelengths) and source-intrinsic effects (dominant at shorter wavelengths). Detailed investigations of individual sources and new high frequency observations suggest a source-intrinsic contributio...