نتایج جستجو برای: diffusion length

تعداد نتایج: 465368  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...

Journal: :Proceedings of the American Mathematical Society 2019

2008
M. Carl J. P. Mugler G. D. Cates W. Miller

observed, and D ∆ is the (time-dependent) diffusion coefficient measured at this diffusion time. Short-time-scale measurements of hyperpolarized He diffusion in the human lung typically use diffusion times between 1 and 2 ms. At this time scale, the He diffusion coefficient in normal lung airspaces is approximately 0.2 cm/s. Thus these measurements probe a length scale of approximately 350-500 ...

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