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Supplemental Digital Content is Available in the Text.Reduced parafoveal vessel density, vessel length density, fractal dimension, and increased blood vessel tortuosity measured by using SS-OCTA predicted the diabetic retinopathy onset in Chinese population. Quantitative microvascular density and geometric optical coherence tomography angiography metrics analysis enables early indication for occurrence of diabetic retinopathy.

This paper is concerned with an analytical solution of transient flow on the four-equation model in fluid-structure interaction (FSI) for a reservoir-pipe-vane system subjected to a sudden closure of hydro turbine vane. The analytical solution is derived corresponding to the junction coupling based on a vane motion. The result obtained from the analytical solution is used to analyze the coupling features between pipe transient flow and hydro turbine vane motion.

This paper is concerned with propagating features of pressure waves induced by water hammer in a long liquid-conveyed pipe subjected to hyper high water head. Effects of dynamically weak compressibility of the water in pipe and pipe wall elasticity on the propagating physics were investigated by comparing in-site measurements and theoretical analyses. The pressure wave form and propagating speed were significantly effected due to weak compressibility of the water and the interactions of the waves. The wave performs a strong unsteadiness while it propagates along the pipe. This study tries to explain an event with consideration of both the dynamically weak compressibility of the water in pipe and the closing features of the valves controlled actively.

Supplemental Digital Content is available in the text