the use of magnetic fields in targeted drug delivery, especially for treatment of cancers and tumoral regions, is one of the significant techniques in the field of modern methods of treatment. considering that many vital biological tissues have been located deep in the body, then for targeted drug delivery and effective treatment in these tissues, it is required to bring therapeutic agent to th...

INTRODUCTION Leakage of urine around a catheter is not uncommon in spinal cord injury patients, who have indwelling urethral catheter. Aetiological factors for leakage of urine around a catheter are bladder spasms, partial blockage of catheter, constipation, and urine infection. Usually, leakage of urine subsides when the underlying cause is treated. Leakage of urine around a suprapubic cathete...

This paper presents the application of a viscous adjoint method to the multipoint design optimization of a rotor blade through blade profiling. The adjoint method requires about twice the computational effort of the flow solution to obtain the complete gradient information at each operating condition, regardless of the number of design parameters. NASA Rotor 67 is redesigned through blade profi...

BACKGROUND Both actively cooled-tip and large-tip catheters are currently available clinically to create large endomyocardial lesions during application of radiofrequency (RF) energy. The purpose of this study was to compare the effect of convective cooling at physiologic flow rates on RF lesion size using both actively cooled and large-tip catheters. METHODS Porcine hearts were sectioned int...

In this paper, the effects of shroud movement on transonic flow and heat transfer in vicinity turbine tip was studied by using 3-D simulation GE-E3 first-stage high pressure turbine. Aerothermal performance structure were analyzed with without moving, respectively. Based distribution limiting streamlines vortex structures, influential characteristics between leakage secondary generated studied....

Abstract A numerical investigation has been conducted on the ram-rotor with various blade-to-blade profiles to achieve potential benefits in enhancing their performance. The profile is changed by adjusting strake camber line enable formation of expansive and contractive flow paths. Results indicate that path can significantly improve total pressure ratio altering position shock trains. Subsonic...

A low specific speed centrifugal compressor with leading/trailing edge combined sweep blades is proposed. The performance and internal flow field characteristics are analyzed in detail by numerical simulations, a bench test carried out. It shown that using the swept blade, stage pressure ratio of improved under all operating conditions, maximum increase can reach 6.5%. efficiency be markedly at...