نتایج جستجو برای: bead
تعداد نتایج: 8161 فیلتر نتایج به سال:
Amorphous silicon nanomaterial is isotropic on the macroscale and can effectively inhibit expansion/contraction during lithiation/delithiation processes, which remarkably improves cycle performance of Li-ion batteries. Bead-milling a simple, cost-effective, scalable method for manufacturing amorphous and/or crystalline nanoparticles. In this work, internal structure Si nanoparticles prepared by...
We developed a new method to measure iron reduction at a distance based on depositing Fe(III) (hydr)oxide within nanoporous glass beads. In this "Fe-bead" system, Shewanella oneidensis reduces at least 86.5% of the iron in the absence of direct contact. Biofilm formation accompanies Fe-bead reduction and is observable both macro- and microscopically. Fe-bead reduction is catalyzed by live cells...
The motility assay of K. Visscher, M. J. Schnitzer, and S. M. Block (Nature, 400:184-189, 1999) in which the movement of a bead powered by a single kinesin motor can be measured is a very useful tool in characterizing the force-dependent steps of the mechanochemical cycle of kinesin motors, because in this assay the external force applied to the bead can be controlled (clamped) arbitrarily. How...
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