In the process of oilfield development, reservoir can be polluted by well cleaning, pump inspection and other operations. And that will lead to a long recovery period oil production after operation, even is difficult recover. recent years, unplugging transformation technologies have been researched applied, certain results achieved. However, there lack systematic evaluation analysis on applicab...

The performance of tempered vacuum glazing (TVG) strongly depends on the structural parameters and degree damage products. In this paper, attention was paid to six indicators which had a major influence TVG, new evaluation were derived from them using principal component analysis (PCA). particular, hierarchical clustering (HCA) based Euclidean distance measurement enabled TVG products be classi...

Patients with retinal problems are increasingly examined with morphologic measurements such as optic coherence imaging (OCT), which is quick and easy to administer. This might give the impression that more time-consuming functional assessments, such as electrophysiological examinations, are unnecessary. However, these tests measure different things—as Dhamdhere et al. showed in patients with di...