نتایج جستجو برای: ultrasound assisted oxidative desulfurization uaod
تعداد نتایج: 363617 فیلتر نتایج به سال:
Laparoscopic Assisted ultrasound guided Percutaneous Nephrolithotomy (PCNL) in Ectopic Pelvic Kidney
We report a patient with pain, abdominal palpable mass and a history of previous open renal stone surgery. Imaging studies showed a right pelvic kidney with multiple calyceal stones. We describe the successful management through laparoscopic assisted percutaneous nephrolithotomy with ultrasonography (PCNL) in ectopic pelvic kidney, stressing that this method is a minimally invasive therapeutic...
This paper presents a method to reduce the invasiveness of Computer Assisted Orthopaedic Surgery (CAOS) using ultrasound. In this goal, we need to develop a method for 3D/4D ultrasound registration. The premilinary results of this study suggest that the development of a robust and “realtime” 3D/4D ultrasound registration is feasible.
A compound catalyst (RA) consisted of Ni, ZnO and HZSM-5 with functions of reactive adsorption desulfurization (RADS) and olefin aromatization for fluid catalytic cracking (FCC) gasoline upgrading was prepared. X-ray powder diffraction (XRD), temperature-programmed reduction and low-temperature N2 adsorption were used to characterize the properties of the catalysts. Performance evaluation by FC...
Ultrasound can be used both simultaneously or as a pretreatment technique for flotation to produce higher combustible recoveries, higher heat values, and lower ash data from raw hard coals. The recent research works have indicated that modifying coal surfaces, especially physical surface cleaning with the help of the cavitation process created by power ultrasound at certain frequency and time i...
The ultrasound-assisted hydrolysis of aspirin methyl ester (AME) was investigated using immobilized Candida antarctica lipase B (CALB) (1%) in the presence of solvents like triolein, chloroform (CHCl3) and dichloromethane (DCM). The effect of ultrasound and the role of water on the conversion rates have also been investigated. Proton nuclear magnetic resonance spectroscopic (1H NMR) was chosen ...
The application of ultrasound with electrochemistry in organic chemistry (known as sonoelectrochemistry) accelerates the activation process chemical reactions. This hybrid technology enhances electrical efficiency and modifies increases product yield. Moreover, it facilitates mass transfer phenomena processes cleaning, degassing, electrode surfaces; maintains higher current densities for effici...
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