نتایج جستجو برای: pulsed column
تعداد نتایج: 109217 فیلتر نتایج به سال:
A supersonic underwater discharge system, driven by a pulsed power generator with 235 ns voltage rise time, was developed to be used as powerful ultrasound source. The article presents details of the system's components and various diagnostic methods used, together main findings obtained during first experimental campaign. system generated peak pressure 184 kPa at 1-m distance, an efficiency en...
according to the english literature, various lasers and light sources (i,g. argon ion lasers, pulsed ktp lasers, diode lasers and nd:yag lasers, pulsed dye laser(pdl), intense pulsed light sources (ipls) are applicable for the treatment of different vascular lesions. these conditions are the most important indication for laser therapy. this review summarizes the current literature on ipl with r...
A new family of partially coherent pulsed beams with spatial cosine-Gaussian and temporal Laguerre–Gaussian correlations, named correlated Schell-model (SCTLGSM) beams, is introduced. An analytic propagation formula derived for the SCTLGSM beam through spatiotemporal ABCD optical system characterizing a continuous dispersive medium. As an example, evolution intensity in still, pure water column...
the effect of high voltage, high frequency pulsed electromagnetic field on slain ovine cortical bone
background: this study is the first research investigating the possible effect of pulsed power signals on the characteristics of cortical bone by comparing the mechanical properties of this type of bone pre and post expose to pulsed power. methods: a positive buck-boost converter was applied to generate adjustable high voltage, high frequency pulses (up to 500 v and 10 khz). the functional beha...
Background and purpose: Royal jelly (RJ) is a substance synthesized by worker bee- is shown to have various biological activities on different cells and tissues of the human body. In this study the effect of RJ on peripheral blood mononuclear cells cytotoxicity against the K562 Erythroleukemia cell line was investigated. Material and methods: In this experimental study human PBMCs (106 cell...
• Zr 1-x Cr x B y thin films are grown by hybrid CrB 2 -HiPIMS/ZrB -DCMS co-sputtering. Pulsed metal-ion irradiation is more effective in film densification than continuous Ar + ions. Dense 0.46 0.54 2.40 and 0.10 0.90 1.81 alloys hard (>30 GPa) almost stress-free. have good nanoindentation toughness remarkedly low corrosion rate. Hybrid HiPIMS/DCMS co-sputtering technique favorable over conven...
Background and aims: Using methods such as pulsed radiofrequency (PRF) and nerve blocks are among the methods used in pain clinics to treat facet-originating low back pain. This study compares two methods of pulsed radiofrequency and facet joint block (FJB)regarding pain recovery and improving disability of patients suffering from facet-originating low back pain. Material and Method: 50 pat...
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