نتایج جستجو برای: field 2

تعداد نتایج: 3160533  

Journal: :Symposium - International Astronomical Union 1998

Journal: :Modern Physics Letters A 2013

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...

Journal: :Superconductor Science and Technology 2021

Abstract Bulk superconductors can act as trapped-field magnets with the potential to be used for many applications such portable medical magnet systems and rotating machines. Maximising trapped field, particularly practical magnetisation techniques pulsed field (PFM), still remains a challenge. PFM is dynamic process in which magnetic driven into superconducting bulk over milliseconds. This flu...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1994
R Malinow N Otmakhov K I Blum J Lisman

Fura-2 and imaging technology were used to detect intracellular Ca2+ changes in CA1 pyramidal cells in hippocampal slices. During focal synaptic stimulation, one or more highly localized regions of Ca2+ elevation (hot spots) were detected in the dendrites. Ca2+ spread from the center of hot spots with properties consistent with diffusion. Several lines of evidence indicate that these hot spots ...

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