This invention provides a liquid feed pump with essentially no particle generation.

Thus, the coating film is partly removed without causing cracks or local peeling, and particle generation is prevented.

A method of generating a particle is disclosed, the particle being for delivery of a polynucleotide to a target cell.

This invention provides a liquid feed pump with essentially no particle generation.

The dynamic particle parameters may be particle displacement values, particle velocity values, particle acceleration values or particle pressure values.

A heat-generating fluid may contact the released metallic particle core and thereby generate heat.

Particle feeding apparatus for feeding particulate material on a particle by particle basis.

The nucleic acid delivery vehicle preferably comprises a virus-like particle such as an adenovirus particle, an adeno-associated virus particle or a retrovirus particle.

The aggressiveness of the particle depends on the coordinates of the particle.

The ratio (Ri/Rc) of the average particle diameter (Ri) of the insulating particle to the average particle diameter (Rc) of the conductive particle is 120-300%.

The fine particle is preferably a magnetic silica particle.

Thus, the coating film is partly removed without causing cracks or local peeling, and particle generation is prevented.

According to the fluid surface generation method, at least one particle may be simply meshed to apply the noise removing filter to the mesh.

A conductive particle (5) comprises the polymer particle and a metal layer coated over the surface of the polymer particle.

Each composite particle comprising an insoluble first particle and at least one insoluble second particle on the surface of the first particle.