The geometry of a compressor leading edge has an important effect on the aerodynamic performance at off-designed incidence angle. current geometric design methods are usually developed based flow characteristics designed However, few research focuses quantitative rules angle in cascade. This situation restricts further optimization and development method. In this paper, starting from potential ...

The spectroscopic characterization of individual nanostructures is of fundamental importance to understanding a broad range of physical and chemical processes. One general and powerful technique that addresses this aim is dark-field microscopy, with which the scattered light from an individual structure can be analyzed with minimal background noise. We present the spectroscopic analysis of indi...

The purpose of the research described in this article was to synthesize molybdenum nitride films with well-defined structures and stoichiometries using ion beam assisted deposition @AD). Approximately 400 nm thick films were prepared by the evaporative deposition of molybdenum while simultaneously bombarding the growing film with low energy (250-1000 eV) nitrogen ions. The effects of ion-to-ato...

Surface-generated structured illumination microscopies interrogate the position of fluorescently labeled objects near surfaces with nanometer resolution along the z axis. However, these techniques are either experimentally cumbersome or applicable to a limited set of experimental systems. We present a new type of surface-generated structured illumination fluorescence microscopy, variable incide...

The object of this study was to obtain quantitative data on the angle dependence of reflected ultrasound signals in freshly excised normal human arterial walls and those with different degrees of atherosclerotic involvement (fatty, fibrofatty, fibrous, or calcified). Fifteen specimens were evaluated in each pathologic subset. The backscatter coefficient (BS, expressed as cm-1 X steradians -1), ...