An ultrasonic inspection method for a graphite ingot was developed to detect internal planar flaws that are oriented in various directions; this method is necessary to perform quality assurance of throat inserts of solid rocket motors. Major problems that are unique to this graphite inspection were solved. An ultrasonic beam in graphite shows uneven propagation behavior both within and among in...

In previous in-situ measurements of metro trains it has been found that the velocity level on track or tunnel wall may vary significantly between different train passages, even though measuring section, type and conditions are identical. An investigation is carried out into sources this variability, using a 3D train-track numerical model. This built software SIMPACK ABAQUS, connected through on...

Owing to its high penetrability with dielectric materials, terahertz time domain spectroscopy (THz-TDS) is a promising nondestructive measurement technology. The coating thickness deviation and defect of thermal barrier coatings (TBC) will affect insulation performance lifetime. In this work, THz-TDS was applied measure the distribution TBC. refractive index obtained by transmission mode. To av...

A few tumours are exceptionally stubborn to oral chemotherapy. The endurance of in a cases is helped by checkpoint immunomodulation keep up the unevenness between resistant reconnaissance and disease cell division.

Podcasts display an unevenness characteristic of domains dominated by user generated content, resulting in potentially radical variation of the user preference they enjoy. We report on work that uses easily extractable surface features of podcasts in order to achieve solid performance on two podcast preference prediction tasks: classification of preferred vs. non-preferred podcasts and ranking ...