نتایج جستجو برای: bipolar and monopolar
تعداد نتایج: 16834213 فیلتر نتایج به سال:
To compare monopolar and bipolar transurethral resection of the prostate (TURP) for clinical effectiveness and adverse events. We conducted an electronic search of MEDLINE, Embase, CENTRAL, Science Citation Index, and also searched reference lists of articles and abstracts from conference proceedings for randomised controlled trials (RCTs) comparing monopolar and bipolar TURP. Two reviewers ind...
We have used two-color time-resolved spectroscopy to measure the relaxation of electron spin polarizations in a bulk semiconductor. The circularly polarized pump beam induces a polarization either by direct excitation from the valence band, or by free-carrier (Drude) absorption when tuned to an energy below the band gap. We find that the spin relaxation time, measured with picosecond time resol...
OBJECTIVE Transurethral resection of the prostate (TURP) is the current optimal thera- py for the relief of bladder outflow obstruction, with subjective and objective success rate of 85 to 90%. Aim of this study was to evaluate efficacy and safety of Plasmakinetic ener- gy (Gyrus electro surgical system), which produces vaporization of tissue immersed in isotonic saline against standard monopol...
Sharp spatial selectivity is critical to auditory performance, particularly in pitch-related tasks. Most contemporary cochlear implants have employed monopolar stimulation that produces broad electric fields, which presumably contribute to poor pitch and pitch-related performance by implant users. Bipolar or tripolar stimulation can generate focused electric fields but requires higher current t...
The regulation of cell polarity in the fission yeast Schizosaccharomyces pombe is apparent in the restriction of extensile growth to the two ends of a cylindrically shaped cell, and in a specific transition - termed 'new-end take-off' (NETO) - between monopolar and bipolar growth mid-way through the cell cycle [1]. Several genes have been identified that affect one or more aspects of cell polar...
The oscillations of chromosomes associated with a single spindle pole in monocentric and bipolar spindles were analysed by time-lapse cinematography in mitosis of primary cultures of lung epithelium from the newt Taricha granulosa. Chromosomes oscillate toward and away from the pole in all stages of mitosis including anaphase. The duration, velocity, and amplitude of such oscillations are the s...
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