Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Numerical Simulation of Superparamagnetic Nanoparticle Motion in Blood
  Vessels for Magnetic Drug Delivery   A numerical model is developed for the motion of superparamagnetic
nanoparticles in a non-Newtonian blood flow under the influence of a magnetic
field. The rheological properties of blood are modeled by the Carreau flow and
viscosity, and the stochastic effects of Brownian motion and red blood cell
collisions are considered. The model is validated with existing data and good
agreement with experimental results is shown. The effectiveness of magnetic
drug delivery in various blood vessels is assessed and found to be most
successful in arterioles and capillaries. A range of magnetic field strengths
are modeled using equations for both a bar magnet and a point dipole: it is
shown that the bar magnet is effective at capturing nanoparticles in limited
cases while the point dipole is highly effective across a range of conditions.
A parameter study is conducted to show the effects of changing the dipole
moment, the distance from the magnet to the blood vessel, and the initial
release point of the nanoparticles. The distance from the magnet to the blood
vessel is shown to play a significant role in determining nanoparticle capture
rate. The optimal initial release position is found to be located within the
tumor radius in capillaries and arterioles to prevent rapid diffusion to the
edges of the blood vessel prior to arriving at the tumor, and near the edge of
the magnet when a bar magnet is used.

11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an