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  2. Channel capacity - Wikipedia

    en.wikipedia.org/wiki/Channel_capacity

    To determine the channel capacity, it is necessary to find the capacity-achieving distribution () and evaluate the mutual information (;). Research has mostly focused on studying additive noise channels under certain power constraints and noise distributions, as analytical methods are not feasible in the majority of other scenarios.

  3. Urdu Science Board - Wikipedia

    en.wikipedia.org/wiki/Urdu_Science_Board

    Urdu Science Board (abbreviated as USB) is an academic and literary institution in Pakistan that operates under the National Heritage and Culture Division, Government of Pakistan. It aims to promote scientific and technical knowledge in Urdu language through the publication of books and journals.

  4. Ion channel - Wikipedia

    en.wikipedia.org/wiki/Ion_channel

    The archetypal channel pore is just one or two atoms wide at its narrowest point and is selective for specific species of ion, such as sodium or potassium. However, some channels may be permeable to the passage of more than one type of ion, typically sharing a common charge: positive or negative . Ions often move through the segments of the ...

  5. Transmembrane channels - Wikipedia

    en.wikipedia.org/wiki/Transmembrane_channels

    Ion channels are a type of transmembrane channel responsible for the passive transport of positively charged ions (sodium, potassium, calcium, hydrogen and magnesium) and negatively charged ions (chloride) and, can be either gated or ligand-gated channels. One of the best studied ion channels is the potassium ion channel. The potassium ion ...

  6. List of canals in Pakistan - Wikipedia

    en.wikipedia.org/wiki/List_of_canals_in_Pakistan

    Their discharge capacity usually ranges from 5-25 cubic meter/second. Link Canal: These Canals are meant to Transfer Water of three Western Rivers, namely Chenab, Jhelum and Indus to the canals dependent on the three Eastern Rivers, namely Sutlej, Beas and Ravi.

  7. Facilitated diffusion - Wikipedia

    en.wikipedia.org/wiki/Facilitated_diffusion

    Facilitated diffusion in cell membrane, showing ion channels and carrier proteins. Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins. [1]

  8. Kachhi Canal Project - Wikipedia

    en.wikipedia.org/wiki/Kachhi_Canal_Project

    The discharge capacity of the main canal is 6000 cusecs. As many as 914 structures have been constructed at or over the main canal including head and cross regulators, road and railways bridges, cross drainage and escape structures and watercourse crossings etc. [ 4 ]

  9. Sodium channel - Wikipedia

    en.wikipedia.org/wiki/Sodium_channel

    The sodium channel selectivity filter is composed of a single residue in each of the four pore-loops of the four functional domains. These four residues are known as the DEKA motif. [52] The permeation rate of sodium through the sodium channel is determined by a four carboxylate residues, the EEDD motif, which make up the outer charged ring. [52]