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In chemical engineering, transport phenomena are studied in reactor design, analysis of molecular or diffusive transport mechanisms, and metallurgy. The transport of mass, energy, and momentum can be affected by the presence of external sources: An odor dissipates more slowly (and may intensify) when the source of the odor remains present.
Means of transport are transport facilities used to carry people or cargo. [1] Examples of means of transport. Space space travel Spacecraft; Air. transport in air ...
Transport (in British English) or transportation (in American English) is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land (rail and road), water, cable, pipelines, and space. The field can be divided into infrastructure, vehicles, and operations.
A mode of transport is a method or way of travelling, or of transporting people or cargo. [1] The different modes of transport include air, water, and land transport, which includes rails or railways, road and off-road transport. Other modes of transport also exist, including pipelines, cable transport, and space transport.
There are two types of active transport: primary active transport that uses adenosine triphosphate (ATP), and secondary active transport that uses an electrochemical gradient. This process is in contrast to passive transport , which allows molecules or ions to move down their concentration gradient, from an area of high concentration to an area ...
Mobility is about satisfying the need to travel. To achieve mobility, means of transport are needed. [1] Mobility corresponds to the human need to travel - recognised by article 13 of the Universal Declaration of Human Rights - while transport is a means of achieving mobility. In public debate, mobility is often confused with transport. [1]
Advection is sometimes confused with the more encompassing process of convection, which is the combination of advective transport and diffusive transport. In meteorology and physical oceanography , advection often refers to the transport of some property of the atmosphere or ocean , such as heat , humidity (see moisture ) or salinity .
Sediment transport is the movement of solid particles , typically due to a combination of gravity acting on the sediment, and the movement of the fluid in which the sediment is entrained.