نتایج جستجو برای: figure of eight coil
تعداد نتایج: 21171314 فیلتر نتایج به سال:
P. Vernickel, P. Röschmann, C. Findeklee, K. Luedeke, C. Leussler, J. Overweg, U. Katscher, I. Graesslin, K. Schuenemann TuTech Innovation, Hamburg, Germany, Philips Research Laboratories, Hamburg, Germany, Technical University Hamburg-Harburg, Hamburg, Germany Introduction Multi-channel transmit MR systems bear the potential of compensating signal intensity variations occurring at higher field...
An experimental study is reported on natural convection heat transfer from a helical heating coil to the surrounding fluid. The coil is heated electrically and the surrounding fluid is selected to be water. The range of parameters are: Rayleigh number, 879 ?£ Ra ?£ 780168, Prandtl number, 4.22 ?£ Pr ?£ 10.02, dimensionless coil diameter,7.69 ?£ Dave /d ?£ 10.77, number of coil rings, 2 ?£ N ?£ ...
چکیده : تحقیق حاضر به منظور مقایسه دو روش تدریس انتزاعی و تدریس در متن بر یادگیری دستور زبان ایتالیاییِ زبان آموزان ترم 1 مدرسه ایتالیایی تهران در تابستان 89 صورت گرفت. روش تحقیق آزمایشی بوده و پژوهش بر 30 نفر از زبان آموزان مدرسه ایتالیایی تهران که بصورت تصادفی به 2 گروه جایگزین شدند صورت گرفت. ابزار تحقیق آزمون 30 سوالی تستی از بانک سوالات استاندارد شده بود که به تصادف انتخاب شده بودند.روشهای...
An eight-rung, 3T degenerate birdcage coil (DBC) was constructed and evaluated for accelerated parallel excitation of the head with eight independent excitation channels. Two mode configurations were tested. In the first, each of the eight loops formed by the birdcage was individually excited, producing an excitation pattern similar to a loop coil array. In the second configuration a Butler mat...
abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...
Backgroundthe use of combined transcranial magnetic stimulation (TMS) and electroencephalography (EEG) for the functional evaluation cerebral cortex in health disease is becoming increasingly common. However, there still some ambiguity regarding extent to which brain responses auditory somatosensory contribute TMS-evoked potential (TEP).Objective/Hypothesisto measure separately contribution cau...
Compromised muscle function can be evaluated in respiratory disease patients by supramaximal magnetic stimulation (isometric twitch) of the quadriceps, a technique that is reproducible and objective. We validated the technique, comparing a device used in our laboratory with another reference electromagnet. We also assessed whether the technique could potentially be used to train the muscle by r...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید