Experiments have shown that DNA molecules in capillary electrophoresis migrate across field lines if a pressure gradient is applied simultaneously. We suggest that this migration results from an electrically driven flow field around the polyelectrolyte, which generates additional contributions to the center-of-mass velocity if the overall polymer conformation is asymmetric. This hypothesis lead...

1.1 MIGRATION ............................................................................................................................................... 5 1.1.1 Migration velocity, capacity or retention factor ............................................................................. 5 1.1.2 Planar chromatography .............................................................................

We propose a novel surface-aware ray tracing method based on implicit model representation. Each horizon is represented by a signed distance field and the spatial relationships between horizons are described by a stratigraphic binary tree. With this kind of implicit representation, complex structural model (e.g., heavily faulted, intrusions and unconformities) are easily handled, and the veloci...

Extended common-image-point (CIP) gathers can be constructed using wave-equation migration by preserving into the output image the non-zero spaceand timelags of the cross-correlation between the source and receiver wavefields. Correct wavefield reconstruction leads to focused events in the extended CIPs, while incorrect reconstruction leads to de-focused events that can be used for velocity mod...

1. The velocity of cataphoretic migration of blood cells in plasma and serum is proportional to the potential drop applied. 2. The cataphoretic velocity of red cells, polymorphonuclear leucocytes, small lymphocytes, and large lymphocytes is described for serum and plasma. 3. The relation between the electrokinetic potential of white blood cells and the differences of potential probably existing...

The modelling of interface migration and the associated diffusion mechanisms at the nanoscale level is a challenging issue. For many technological applications ranging from nanoelectronic devices to solar cells, more knowledge of the mechanisms governing the migration of the silicon amorphous/crystalline interface and dopant diffusion during solid phase epitaxy is needed. In this work, silicon ...

The optimal checkpointing algorithm (Griewank and Walther, 2000) minimizes the computational complexity of the adjoint state method. Applied to reverse time migration, optimal checkpointing eliminates (or at least drastically reduces) the need for disk i/o, which is quite extensive in more straightforward implementations. This paper describes optimal checkpointing in a form which applies both t...

Light is able to remotely move matter. Among various driving forces, laser-induced metal sphere migration in glass has been reported. The temperature on the laser-illuminated side of the sphere was higher than that on the non-illuminated side. This temperature gradient caused non-uniformity in the interfacial tension between the glass and the melted metal as the tension decreased with increasin...