Transmissibility

Transmissibility may have several meanings:

In most contexts, transmissibility is related to permeability.

In medicine, transmissibility is a synonym for basic reproduction number

See also

Transmission (medicine)

In medicine and biology, transmission is the passing of a communicable disease from an infected host individual or group to a particular individual or group, regardless of whether the other individual was previously infected.

The term usually refers to the transmission of microorganisms directly from one individual to another by one or more of the following means:

Transmission can also be indirect, via another organism, either a vector (e.g. a mosquito or fly) or an intermediate host (e.g. tapeworm in pigs can be transmitted to humans who ingest improperly cooked pork). Indirect transmission could involve zoonoses or, more typically, larger pathogens like macroparasites with more complex life cycles.

Hydraulic conductivity

Hydraulic conductivity, symbolically represented as , is a property of vascular plants, soils and rocks, that describes the ease with which a fluid (usually water) can move through pore spaces or fractures. It depends on the intrinsic permeability of the material, the degree of saturation, and on the density and viscosity of the fluid. Saturated hydraulic conductivity, K_sat, describes water movement through saturated media.

Methods of determination

There are two broad categories of determining hydraulic conductivity:

The experimental approach is broadly classified into: