نتایج جستجو برای: macroscale

تعداد نتایج: 1900  

Journal: :Chemical communications 2014
Muhammad Rashed Javed Supin Chen Jack Lei Jeffrey Collins Maxim Sergeev Hee-Kwon Kim Chang-Jin Kim R Michael van Dam Pei Yuin Keng

[(18)F]fallypride was synthesized in a batch microfluidic chip with a radiochemical yield of 65 ± 6% (n = 7) and an average specific activity of 730 GBq μmol(-1) (20 Ci μmol(-1)) (n = 4). Specific activity was ~2-fold higher than [(18)F]fallypride synthesized in a macroscale radiosynthesizer, despite starting with significantly less radioactivity, and thus safer conditions, in the microchip.

2014
Jordan M. Berg

Peristaltic pumps are mechanical displacement pumps that induce flow in a fluid-filled, flexiblewalled conduit through peristalsis – transport due to traveling contraction waves. While macroscale peristaltic pumps appear in a variety of configurations, micropumps based on this principle almost exclusively use the sequenced contraction and expansion of a small number of discrete actuators – typi...

1998
W. Dzwinel W. Alda M. Pogoda

Results of 2D molecular dynamics (MD) method are presented for the mixing phenomenon in the microscale, where the length and time are measured in terms of microns and nanoseconds, respectively. Particle ensembles consisting of 0.7–3 × 106 particles in 1.3–5×105 timesteps were simulated. We focus on the temporal evolution of mixing layer between two superimposed Lennard–Jones particle systems in...

Journal: :DEStech Transactions on Computer Science and Engineering 2018

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