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A noble diode pump is a type of ion pump used in high-vacuum applications that employs both a chemically reactive cathode, such as titanium, and an additional cathode composed of tantalum. The tantalum cathode serves as a high-inertia crystal lattice structure for the reflection and burial of neutrals, increasing pumping effectiveness of inert ...
Sump pumps are used where basement flooding may otherwise happen, and to solve dampness where the water table is near or above the foundation of a structure. Sump pumps send water away from a location to any place where it is no longer problematic, such as a municipal storm drain, a dry well, or simply an open-air site downhill from the building (sometimes called "pumping to daylight").
Diffusion vs. Transport. In biology, an ion transporter is a transmembrane protein that moves ions (or other small molecules) across a biological membrane to accomplish many different biological functions, including cellular communication, maintaining homeostasis, energy production, etc. [1] There are different types of transporters including pumps, uniporters, antiporters, and symporters.
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The NEG acts as a getter or getter pump that is able to reduce the pressure to less than 10 −12 mbar. Non-evaporable getters , which work at high temperature, generally consist of a film of a special alloy, often primarily zirconium ; the requirement is that the alloy materials must form a passivation layer at room temperature which ...
This entry, "Ion pump (physics)" was created to refer to a vacuum pumps, as a disambiguation from Ion transporter. A vacuum ion pump ionizes residual gases and accelerates them towards a Ti cathode, causing a sputtering event, a process is is most decidedly -not- reversible -- the article previously stated that the process is reversible. User ...
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