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Micro CT of porous medium: Pores of the porous medium shown as purple color and impermeable porous matrix shown as green-yellow color. Pore structure is a common term employed to characterize the porosity, pore size, pore size distribution, and pore morphology (such as pore shape, surface roughness, and tortuosity of pore channels) of a porous medium.
Porous glass is glass that includes pores, usually in the nanometre- or micrometre-range, commonly prepared by one of the following processes: through metastable phase separation in borosilicate glasses (such as in their system SiO 2-B 2 O 3-Na 2 O), followed by liquid extraction of one of the formed phases; [1] [2] through the sol-gel process; or simply by sintering glass powder.
Terms in common with other fields, if repeated here, generally focus on their mycology-specific meaning. Related terms can be found in glossary of biology and glossary of botany , among others. List of Latin and Greek words commonly used in systematic names and Botanical Latin may also be relevant, although some prefixes and suffixes very ...
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Porins are water-filled pores and channels found in the membranes of bacteria and eukaryotes. Porin-like channels have also been discovered in archaea. [7] Note that the term "nucleoporin" refers to unrelated proteins that facilitate transport through nuclear pores in the nuclear envelope.
Iron bacteria stimulate ferric oxyhydroxide deposition which may cause clogging of soil pores. [16] This is an indirect biological cause of the decrease in hydraulic conductivity. Bioclogging is mostly observed in saturated conditions, but bioclogging in unsaturated conditions is also studied.
The traditional Petroleum Engineering and core analysis definition of effective porosity is the sum of the interconnected pore space—that is, excluding isolated pores. [11] Therefore, in practice, for the vast majority of sedimentary rocks, this definition of effective porosity equates to total porosity.
Germ pore, a small pore in the outer wall of a fungal spore through which the germ tube exits upon germination; Stoma, a small opening on a plant leaf used for gas exchange