نتایج جستجو برای: different duration

تعداد نتایج: 1930969  

2017
Fabio Frassetto Nicola Fabris Paolo Miotti Luca Poletto

The design of grating-based instruments to handle and condition coherent ultrafast pulses in the extreme-ultraviolet is discussed. The main application of such instruments is the monochromatization of high-order laser harmonics and free-electron-laser pulses in the femtosecond time scale. Broad-band monochromators require the use of diffraction gratings at grazing incidence. A grating can be us...

Journal: :International Journal of Current Microbiology and Applied Sciences 2020

Journal: :Frontiers in Earth Science 2023

In order to explore the deterioration mechanism of mechanical properties phosphate rock under different saturation time, degradation phosphoric samples duration was analyzed by laboratory test, theoretical analysis and neural network modeling, results is as follows: water will result in samples. The peak compressive strength strain decreased gradually with increase time. average 12, 24, 36 h sa...

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