نتایج جستجو برای: pulse ratio
تعداد نتایج: 585102 فیلتر نتایج به سال:
Since nonuniform drying in the continuous microwave harms safety and quality of dried food materials, a significant improvement can be achieved by controlling application time microwave. This study aimed to investigate influence power at constant pulse ratio during zucchini on different product characteristics. The samples were first exposed microwaves with powers 360, 600, 900 W alternately fo...
In this study, the effects of the second pulse resistance spot welding on the microstructure and mechanical properties of TRIP1100 steel were evaluated. The thermal process after welding was designed to improve metallurgical properties with pulse currents of 6kA, 9kA and 12kA after initial welding with 10kA current. The effect of the second pulse on mechanical and microstructural properties was...
Introduction: Transient cavitations induced by low frequency irradiation of ultrasound can be used to treat tumors. Previous studies in in-vitro experiments have shown that induced cavitation by dual or multiple frequencies of ultrasound is greater than induced cavitation by single frequency irradiation. In this study, we compared and evaluated the treatment effects of dual frequency irradiatio...
The possible relationships between indicators of small resistance artery structure and of arterial stiffness and central hemodynamics have not yet been evaluated. Aim of this study was to assess the relationship between indicators of large arteries stiffness, including carotido-femoral pulse wave velocity and of vascular alterations in small resistance arteries (media/lumen ratio, M/L) in patie...
A practical method for generating high-quality optical pulses of sub-picosecond pulse widths is presented. The method uses linear chirp generation in supercontinuum pulses in a normal dispersion fiber. This linear chirp is utilized by an anomalous dispersion fiber to shorten the pulse widths down to a few hundreds of femtoseconds. This compression method results in 0.28-ps 10-GHz optical pulses...
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